Suspension and Your Ride

Wednesday, August 31, 2011 by Spencer Diaz
KYB Strut-Plus AssemblyThe last time you drove over railroad tracks, how well did your car respond? If it felt like your dampers were shot, it might be time to have your suspension components switched out. Or maybe your dampers aren't shot, but you'd like to change the way your car rides. Tire Rack offers a competitive selection of suspension components tailored to your vehicle's needs.

I personally found this out the hard way. While taking my wife's car, a 2004 Pontiac Grand Am, to get the oil changed, I noticed that the vehicle had a "bouncy" feel to it. The handling was very unpredictable and I could feel every imperfection in the road. 

In looking at damper options, we had our local mechanic install KYB struts in the front and rear of the vehicle. What a difference this made in the way the vehicle rides! One quick tip: always try and change out both the mounts and boots when replacing suspension components. Nothing like new products being held to your car by worn-out mounts!

For those looking to increase their vehicle's performance, consider the options available from H&R. They offer some of the best suspension components for improving handling and performance for many vehicles, including the 09 VW Jetta TDI. In addition to struts, take your suspension upgrade to another level with the H&R Coil-Over Premium Performance Kit. And to gain a better understanding on improving your vehicle's performance, read "Minimizing & Controlling Bounce."
H&R Coil-Over Premium Performance Kit
After you've purchased suspension components and had them installed, don't forget to fill out our Suspension Component Survey. This will provide others with reviews and help them select the proper suspension products for their vehicle.

Coil-Over Kits for 2007-2010 BMW M3 Coupe

Tuesday, July 5, 2011 by Logan Woodworth
Suspension Products for 2008 BMW M3 CoupeThe late model BMW M3 comes equipped with a sport suspension system optimized for aggressive street driving. For drivers looking for improved track performance and the flexibility to adjust for reasonable street manners, upgrading to a fully adjustable coil-over kit is a great solution. 

A coil-over suspension kit incorporates precisely matched coil springs and dampers in a compact solution to provide maximum performance. In addition to improved handling, these coil-over suspension solutions reduce the unsprung weight of a vehicle. These improvements translate to faster lap times and improved daily driving comfort.    

Coil-overs can also be a great solution for lowering your car with upsized custom wheels (rims) and tires. The ability to fine tune the car's ride height can be a great way to overcome many challenging wheel fitments. 

There are several options including kits from KW and H&R that can adjust both the ride height and dampening:
H&R PCS Damper Adjustable Coil-Over
H&R Damper Adjustable Coil-Over
H&R Street Performance Coil-Over
H&R Street Performance Coil-Over

KW Clubsport Kit Coil-Over
KW Clubsport Kit Coil-Over
KW Variant 3 Coil-Over
KW Variant 3 Coil-Over
 
Search suspension components by vehicle to see which suspension products work best for your vehicle.

On the Level

Friday, June 24, 2011 by Jonas Paeplow
Pickup trucks are some of the most popular vehicles on the road today, but many people don't use their trucks for what they were originally intended... hauling a load.

 

On many pickups, especially 3/4 and 1 ton applications, using the vehicle as a daily driver with little or no load in the rear creates a rear end high, front end low configuration or "positive frame angle".

Positive Frame AngleSpecific vehicles like 1999-2006 Chevrolet/GMC trucks have alignment specifications that require frame angle to be added or subtracted to the caster reading. Basically this means the specifications for these vehicles are written to a zero frame angle.
 

 

Illustration courtesy of SPC Performance

Caster is the angle to which the steering pivot axis is tilted forward or rearward from vertical, as viewed from the side. If the pivot axis is tilted backward (that is, the top pivot is positioned farther rearward than the bottom pivot), then the caster is positive; if it's tilted forward, then the caster is negative.

 

Caster angleCaster is affected mostly when a vehicle has a large front to back difference in ride height. This may also be because of heavy loading in the rear of the vehicle or "negative frame angle". The frame angle will directly affect the caster in a one to one relationship. That means for each degree of frame angle change the caster will change one degree. Positive frame angle will be added to the caster reading whereas negative frame angle would be subtracted from the caster reading.
 

Illustration courtesy of Grassroots Motorsports Magazine


Caster does not affect tire wear but it can affect how well the vehicle steers. Excessive positive caster will cause an increase in steering effort, especially for low speed maneuvers, such as parking. Negative caster can cause the truck to have poor directional stability, make it tend wander and not return to center. The addition of larger than stock tires or 4WD only compounds these conditions.

If you don't carry heavy loads, a leveling kit can help with steering issues, even if you don't want to put larger tires on your truck. If you do want larger tires, installation of lift and level kits will allow for the use of up to 35" tall tires with 17"-26" wheels and near stock offset, without rubbing, depending on the application.

When shopping for a lift kit for your pickup truck, it is important to keep in mind that there are just a few ways that a lift can be performed. Some systems relocate the suspension brackets and require the removal of all suspension components to do so. Others increase spring pressure and result in a stiffer ride. Tire Rack carries lift and leveling systems by Traxda and Bilstein. Each have their own method of lifting or leveling your vehicle.

 

Traxda's method relocates the mounting point of the spring that holds the truck up without changing the location of the stock suspension arms. Install is simpler and easier and doesn't compromise the stock ride. Each application is designed to ensure stock compatibility and quality. For example, with a coil-over shock style suspension the strut length is extended while retaining the stock spring pressure. This keeps the smooth ride of a stock truck, with no increase in harshness. For a torsion bar style suspension a re-indexed torsion key and shock relocator brackets are included to change the location of the torsion spring mount without changing the spring tension.


Truxx Lift and Level KitTraxda Lift and Level Kits raise the front of the truck 1.5" to 3" (depending on the vehicle) to eliminate positive frame angle and provide the clearance necessary to run larger wheels and tires. For some applications, the rear of the truck can be raised 1"-2" as well leveling the truck and compensating for the heavy loads used in a working environment (negative frame angle).

Most kits are a direct bolt-in style, simple and easy to install with nothing more than common hand tools and require no modifications to your vehicle. The kits retain stock ride quality. All Traxda kits come complete with hardware, full instructions, alignment specs and dedicated technical support.

Bilstein's ride height adjustable 5100 Series replacement shocks for coil-over design front suspensionBilstein 5100 pickups utilize the vehicle's existing stock coil spring.

The 5100 Series (Ride Height Adjustable) shocks feature multiple snap-ring grooves on the body of the shock to accommodate different spring seat positions, allowing height adjustments from 0" to 2.5", depending on the application. By raising the spring seat position, the factory rake (positive frame angle) can be altered to achieve a level front to rear ride height while accommodating up to 33" diameter tires. Bilstein's self-adjusting valving delivers improved damping control and a smooth ride on all road surfaces at any speed.

You don't have to live with poor steering, tire binding, steering wander and rough ride, just keep it....
"on the level."

 

Project STR Competes in 4 Events in 3 Weeks

Tuesday, June 7, 2011 by Tire Rack Motorsports
It's been a busy few weeks for Project STR as the summer race season has finally made its way to the Midwest with three back-to-back weekends of competition.

First up was an outing to the Tri-State Sports Car Club event at the Sears Centre in Hoffman Estates, IL for a shake down on the installation of our new KW Clubsport suspension. Coil Spring rubs against the shock body creating a bind in the suspensio ntravel.Installation went well, but during the event driver Chris Harvey noticed some unusual handling characteristics. Investigation revealed that machining on one of the prototype rear shock mounts allowed the spring coils to come in contact with the shock body, creating a significant bind. Once back home, shimming the angle of the top mount canted the spring enough to clear the shock body, and solved the problem. We’re using the first prototype, so the final production piece will be corrected to prevent this from happening.

The KW Clubsport suspension was put to the ultimate test over the Memorial Day weekend as Harvey and co-driver John Rogers drove the car 600 miles to Lincoln, NE for the Tire Rack SCCA Spring Double Nationals with back-to-back Pro Solo and National Tour events. At the Pro, Rogers was quick early on, but faded on day two, slipping back to 7th, one out of the trophies. Harvey was able to capitalize on his day-two runs, jumping up to the 3rd spot, right behind the S2000s of Robert Thorne and James Yom.

Here’s a video look at the right side course on day two.     

Chris Harvey makes a rear shock adjustment on our new KW Clubsport Coil-Over suspensionAt the National Tour event, rain was the story on day one, as the first two heats were run in soaked to just wet conditions. A drying course for our heat meant it would come down to the third and final run to get it done. Adding to the challenge was the sheer size of the course, lasting 75 seconds per run and covering the entire area normally devoted to two courses. Rogers struggled to find his rhythm in several of the four long slaloms on the course, slotting into the 16th spot out of 26 drivers. Harvey fared better, posting the 7th fastest time in the class, and the quickest for a 3rd gen Mazda MX-5 as the field tried to chase down the gaggle of Honda S2000s that lead the pack. Hot temperatures and high winds greeted our drivers on day two. In the end, our team wasn’t able to find enough speed to catch the leaders, with Harvey taking the 8th and final trophy spot and Rogers moving up one to 15th overall.

Back home in Indiana, Chris Harvey took some time to compete in the 19th annual Yokohama/Tire Rack/Windy City BMW Club Charity Challenge held at the Tire Rack test track. All non-BMWs are lumped together in the “everything else” class competing heads up with no index factor. Harvey put his local track knowledge to good use as he drove his way through the tight and tricky course set-up by the Windy City crew. When the dust settled Chris had the 3rd fastest non-BMW and the 4th fastest time of the event. Not too bad considering the cars ahead of him were rolling on sticky Hoosier R-compound tires, versus the Hankook Ventus R-S3 street tires currently on our MX-5.
Project STR takes a moments rest during a busy race weekend
Next up will be the Tire Rack SCCA National Tour in Toledo, OH over the July 4th weekend.

Project STR Revs up for the SCCA Solo Spring Nationals

Friday, May 27, 2011 by Tire Rack Motorsports
Memorial Day weekend 2011 will go down as the first time the SCCA has held a ProSolo and National Tour event over the same holiday weekend. We can’t think of a better place to host the event than the awesome Lincoln Airpark, home of the Tire Rack SCCA ProSolo Finale and National Championships. It appears many of our fellow Solo competitors agree, as the ProSolo entries capped out at 250 and the National Tour count has topped 300 competitors. It is an incredible turnout and testament to the enthusiasm within the Solo community despite high fuel prices and the still recovering economic conditions. 

With the big event just around the corner, the Tire Rack/Grassroots Motorsports Project DEI Gold FoilSTR team of John Rogers and Chris Harvey have continued the development of the 2010 Mazda MX5. First up, was the addition of Design Engineering, Inc. (DEI) Reflect-A-GOLD heat reflective material. We wrapped out a cold air intake tube, O2 sensor wires and plastic exhaust outlet hole with this state of the art polymer to help ward off heat from the engine compartment. Its self adhesive backing makes it easy to install just about anywhere.

Next up was some fine tuning to our exhaust system. In 2010 we installed a STR class legal, PPE header, mid-pipe and resonator and capped it off with a Goodwin Race muffler. 12,000 miles and lots of hard use had taken a toll on the resonator, so we decide to explore other options. We tried the simple solution first, just replacing the resonator with a straight pipe, but the resulting resonance in the cabin was too much for our eardrums to handle on the long drives to and from events. A call to Burns Stainless was made and an Ultra-Light muffler was quickly on its way. We replaced our old piece with this unit and noticed an immediate drop in the exhaust tone and weight. It's quiet enough we can bolt on a lightweight turndown in place of the Goodwin muffler and leave a few more pounds behind in the paddock.

To take care of our suspension needs in 2010, we installed an off the shelf, KW Variant 3 coil-over system with Hotchkis anti-roll bars. This set-up carried us to ProSolo and National event wins as well as bringing home hardware from the ProSolo Finale and National Championships. The street oriented spring rates coupled with KW’s wide range of valving adjustments performed better than expected on the Solo course and gave us a comfortable ride home.  prototype KW Clubsport Coiover Suspensions For 2011, we decided to turn up the volume a bit and assist KW with the development of a more aggressive system for Solo and track use. Stay tuned for driver impressions and track results as we get some seat time on this newly installed, prototype set-up.

ProSolo event competition will take place on May 27-28th with the National Tour running on May 29th-30th. You can find live results and a link to streaming audio at www.sololive.scca.com .




AIRAID Now Available at Tire Rack

Wednesday, May 25, 2011 by Tire Rack Team
AIRAID SynthaMax Premium FilterA cold air intake system can increase your vehicle’s horsepower while improving the engine’s efficiency by relocating the filter to the outside of the engine compartment and delivering cooler air inlet temperatures. Reducing restrictions in the air intake will help create more horsepower and torque.

Purchasing an air intake system along with other upgrades such as a coil over kit can increase your vehicle’s performance. And to ensure optimum engine performance, consider the intake systems available from AIRAID. With the introduction of SynthaMax filters, AIRDAID’s complete line of intake systems provide long lasting quality with high-tech filtration technology.

Shop by vehicle or contact one of our sales specialists with questions you may have about tuning your engine.


Coil-Over Suspension: Is It Right for Me?

Friday, May 20, 2011 by Doc Horvath
Coil-over suspension kits represent the top end of the suspension market, giving the driver the most flexibility in adjusting both the ride height and "firmness" of the shock absorbers to fine tune the handling of their vehicle. Sounds like a great option to have right? Well, the answer lies in how and where you drive your vehicle.

The first thing to remember is that any component that lowers the ride height of your vehicle will affect ride comfort (see a previous blog post titled "What Should I Expect from Lowering Springs?"). Even the most modest lowering spring (1.0" of drop or less) will affect ride comfort, but any coil-over setup will have a much more aggressive spring rate which translates to a firmer ride. In my mind, the coil-over suspension is intended for a driver that wants to maximize the handling of the vehicle in "track" conditions and also have the flexibility to adjust ride height (and damping rates) to suit track conditions. If local road conditions are poor, coil-overs will make a rough ride even rougher!
Eibach Multi-Pro Coil-Over R2
Eibach Multi-Pro Coil-Over R2
KW Variant 1 Coil-Over
KW Variant 1 Coil-Over

The Eibach Multi-Pro Coil-Over R2 and the KW Variant 1 have the least "aggressive" spring rates, which will minimize the change to ride comfort but still improve handling and allow you to adjust your ride height for the perfect stance.

Bilstein PSS Coil-Over Kit
Bilstein PSS Coil-Over Kit
KW Variant 3 Coil-Over
KW Variant 3 Coil-Over

The Bilstein PSS Coil-Over Kit and KW Variant 3 represent the elite in coil-over systems and provide the greatest range of adjustability for ride and ride height.

Check out our full line of coil-over systems!

Improve Handling for your 2010 and 2011 Camaro

Thursday, May 12, 2011 by Hunter Leffel
KW Variant 1 Coil-OverNeed to improve the cornering and handling on your Chevy Camaro? Tire Rack has a number of solutions in our performance suspension product lines. Ranging from complete systems (springs, bars and dampers), or single components you can lower and firm up the suspension to dramatically improve cornering and handling while also improving the stance of the car. 

Tire Rack did some testing in various configurations. Starting with a spring swap, we found an increase in handling with a mild firming up of the ride. A very nice modification but still quite tame. From there we wShop by Vehicleent to a complete upgrade in springs, dampers and roll bars. This improved all areas of ride control and responsiveness, making us wonder why original factory set-up wasn't like this. We also tested a coil-over system for those wanting complete control of the set-up. Read Suspension Component Test Results.

Options are available for model years 2010 and 2011 in most engine and trim levels.

Shop by vehicle to see which suspension products are best for your vehicle. 

Project STR launches into the 2011 Pro Solo season

Friday, May 6, 2011 by Tire Rack Motorsports
Tire Rack driver Chris Harvey pointed the Project STR Mazda MX5 550 miles south to Blytheville, Arkansas for our first SCCA ProSolo event of 2011. Co-driver John Rogers was tending to One Lap of America event duties so Chris was on his own to dial in the car and take on the solid, 12 car STR class field.

The Friday test and tune course was put to good use as adjustments were made for the unique and tricky concrete surface. Using our tried and true Dunlop Direzza Z1 Star Spec tires, KW Variant 3 coil-overs and Hotchkis anti-roll bars, the set-up was tweaked to remove some persistent oversteer we encountered. Nice gains were made on the clock and confidence was high going into Saturday’s first heat competition.

Long time SCCA National level Solo driver Darrin Disimo put down the fastest right side time while Chris followed-up with the quickest left side time during first heat competition runs on Saturday morning. Darrin’s co-driver and car owner, Dave Marcus showed flashes of speed on par with the front runners, but cone troubles pushed him back in the running order.

An announcement was made by event officials after the first heat that all three heats would be run on Saturday due to the strong possibility of rain during the normal Sunday morning final heat. That’s all the inspiration the STR drivers needed to push extra hard in the second heat in search of every bit of time they could find on course. Darrin came out swinging, putting down the quickest clean right side run but ran into cone troubles on the left. Chris answered with a half second improvement on the right side but then ran into red light troubles on his final two runs of the heat to nix any further gains. Once the math was done, Darrin held onto a solid .658 second lead, as the drivers headed into the third and final heat of the event. Dave Marcus cleaned up his first heat cone troubles to move into third, just four-tenths off Chris’ pace.

Tensions were high and some class leading competitors were observed doing rain dances as the final heat runs began late Saturday afternoon. Lots of bandwidth was being used as competitors kept one eye on the sky and another on the weather radar as rain clouds were building to the west. The course remained dry and fast until the STR competitors were directed to the starting line. The skies were dark as the ProSolo starting lights came down on the class leaders. With the wipers coming on and lightning in the distance as they rounded the half way point, Chris and Darrin charged through the finish each finding time on course and Chris closing the overall gap by two-tenths. The drivers then switched sides only to find the lightning closing in and the sprinkles turning into a steady drizzle. Once the drivers launched onto the course, it was clear the concrete had lost some grip and no additional gains would be found. As Darrin and Chris crossed the finish line for a second time, Darrin claimed the event win as the skies fully opened and soaked the course to prevent hope of improvement for the remaining two runs. 

The weather at the Tire Rack headquarters in South Bend, Indiana is finally turning as we head into May, this will allow for additional tire testing and suspension work as our search for additional speed continues. Our sights are set on the next major event for Project MX5, the 2011 Tire Rack SCCA ProSolo and National Tour in Lincoln, Nebraska over Memorial Day weekend. Chris and John can’t wait to have another crack at the ProSolo Finale and National Championship event site.
8-wheel fire truck is not built for speed.

Lowering Springs and Fender Lip Rolling

Thursday, May 5, 2011 by Doc Horvath
Fender Lip Rolling Tool
I recently installed a great set of coil-over shock and springs in an effort to improve handling and my car's look. While the decrease in gap from the top of the tire to the bottom of the fender lip looked great, I found after inspection that my rear tires were very close to rubbing the fender lip in the back.

What to do? ROLL THAT FENDER !

Tire Rack sells a great tool that when used with an industrial heat gun (and patience), got me out of the jam I was in.

The fender lip rolling tool features an adjustable arm and a non marring roller that will slowly bend the fender lip up and out of the way for additional clearance. It is essential to use a heat gun to keep the paint flexible enough to avoid cracking as the metal is worked.  

You can see detailed instructions on the tool in the User's Guide. (PDF)

If you've recently installed bigger wheels and tires, or lowered your car like I did then you may want to consider picking this tool up!

Hotchkis Competition Anti-Roll Bars

Tuesday, April 19, 2011 by Chad Hocker
Hotchkis Sport Suspension Competition Anti-Roll BarsLooking to take your performance vehicle to the next level on the track or at the next autocross event? Designed with the enthusiast in mind, Hotchkis Sport Suspension Competition Anti-Roll Bars improve handling and reduce body roll via a more aggressive rear bar set.

One advantage of running a thicker rear bar vs. stock is added over-steer, which maximizes the vehicle's race tires for on-track performance. The Hotchkis bars can also be used if your vehicle currently has lowering springs or a coil-over kit.

Popular Applications for the Sport Anti-Roll Bars
ModelYear
Front DiameterRear Diameter
Chevrolet Camaro10+32mm, 1 Position25mm, 3 Positions
Nissan 370Z09+35mm, 1 Position27mm, 3 Positions
Infiniti G3508+35MM, 1 Position27mm, 3 Positions

Start shopping by vehicle, brands or product categories from our Suspension page to see which suspension products work best for your vehicle.

Additional information:

"Understanding Basic Suspension Terminology"

Coil-Overs for the Race track and the Road

Friday, April 8, 2011 by Tire Rack Team
KW Clubsport Kit Coil-OverThe KW Clubsport Coil-Over is for customers who demand a better handling car during track day events, but also want a setup that can be used for every day driving. The set up ensures excellent handling, performance, agility and faster lap times.

Key Benefits & Features of the KW Clubsport Coil Over:

•    Height adjustable
•    Performance setup for the track
•    Linear, high performance race springs
•    Stainless steel “inox-line” damper bodies
•    Independently adjustable, low speed, compression/rebound forces

The suspension setting is adjustable to meet the requirements of your tires and the intended use of your vehicle based on the vehicle load and to better match your driving style.

For more information on improving your vehicle’s performance, read:

“Altitude and Attitude Adjustment”

Shop by vehicle to see which suspension components work best for your vehicle.

Coil-Over Kits

Monday, April 4, 2011 by Tire Rack Team
Eibach Multi-Pro-Callaway Coil-Over KitsA complete coil over system is one solution to improve your vehicle’s performance.

The system combines springs, shocks and bump stop into one assembly. The coil-over set-up is similar to a race set-up in that it allows tuning of the vehicle through ride height adjustment. Coil overs often use an adjustable spring perch that allows for different vehicle ride heights without changing the springs.

Springs encompass the shock and bump stop, working to minimize bounce that occurs during driving. Shocks help control suspension movement while bump stops keep your vehicle suspension parts from coming in contact with the vehicle’s frame.

More information on suspension terminology can be found here:

“Understanding Basic Suspension Terminology” 

H&R Springs RSS Club Sport Coil-Over Suspenion Kit

Friday, April 1, 2011 by Tire Rack Team
RSS Club Sport Coil Over Suspension KitH&R Springs has one simple philosophy: “Build the best and the rest will follow.”

Whether it’s the Premium Performance Coil Over Kit or one of their Sport Springs Sets, H&R’s products are tested and approved by the German government’s TUV agency for quality, safety and reliability. All springs developed by H&R are precision-wound with the highest quality German spring steel available.

Engineers who develop racing suspensions also design the RSS Club Sport Coil Over Suspension Kits. These kits enhance the performance and corner-handling ability of your vehicle without harshness.

Shop by vehicle to see which suspension component works best for your vehicle.

New ST Coil-Over Kit for Hardtop Mini

Saturday, March 26, 2011 by Logan Woodworth
ST Coil-OverLooking to upgrade more than the wheels on your Mini? Upgrading the suspension will properly lower your vehicle while offering an improved ride, handling and performance.

The ST Coil-Over kit for the Hardtop Mini Cooper is a Premium and Performance Street suspension product that provides great performance at a great value. Designed and manufactured alongside KW's (ST Suspension parent company) products in Germany, the ST coil-over is engineered after the KW Variant 1 Coil-Overs.

Heavily galvanized for exceptional rust protection, the ST Coil-Overs are backed by a five-year limited warranty.

Shop by vehicle to see which suspension products work best for your vehicle.

Springs and Shocks for Spring

Friday, March 18, 2011 by Colin .
Are you looking to improve the suspension on your vehicle? With options available from companies such as H&R, Eibach and Koni, Tire Rack has the products to improve your vehicle's appearance and handling.  

An entry-level introduction to improving your vehicle's appearance and handling is to purchase a set of lowering springs and performance dampers.

If you are looking for more control over adjustability then consider a coil-over or cup kit

Anti-roll bars are also a great addition to improve handling and help remove body roll around corners. 

Lowering will change the ride characteristics of the vehicle, therefore give some thought to the balance you want to maintain between handling, looks and ride comfort. If you have upgraded your wheels and tires to a larger-than-original size, you will also want to check clearance before you decide on the kit you want.          

Coil-Over Suspension for Your Porsche 911

Monday, September 27, 2010 by Logan Woodworth
Are you looking to shave time of your laps at the track? One way to do this is to improve the handling of your Porsche 911. By upgrading your OE suspension, you can hit that apex faster and with more confidence.

One of the best ways to improve your suspension is to upgrade to a coil-over damper system.

Coil-over systems from Bilstein, KW, and H&R give you the performance needed to shave off valuable seconds at the track and the flexibility to fine-tune both the ride height and damping rates to dial-in your Porsche 911 to fit your specific driving style.
Bilstein PSS9 Coil-Over KitBilstein PSS10 Coil-Over KitKW Variant 3 Coil-OverH&R Street Performance Coil-Over Kit

Looking for a Lift?

Wednesday, September 15, 2010 by Porter Pryde

Thinking about a suspension lift for your truck, but you don't want an overly stiff ride?

Consider the Traxda Lift and Level Kits.


Traxda kits lift your ride by relocating the mounting point of the spring that holds the truck up without changing the location of the stock suspension arms. Installation is simple and does not require the removal of all suspension components like many kits. Because spring pressure is not increased, it doesn't compromise the stock ride.
 
Each Traxda kit is fine-tuned to your vehicle to ensure stock compatibility and quality. 

With a coil-over style suspension, the strut length is extended while retaining the stock spring pressure. This keeps the smooth ride of a stock truck, with no increase in harshness. For a torsion bar style suspension, a re-indexed torsion key and shock relocator brackets are included to change the location of the torsion spring mount without changing the spring tension. 

All Traxda kits come complete with hardware, full instructions, alignment specs and dedicated technical support. Most kits are a direct bolt-in style, simple and easy to install with nothing more than common hand tools and require no modifications to your vehicle.

Coil-Over Kit Basics

Tuesday, August 17, 2010 by Logan Woodworth
Bilstein PSS10 Coil-Over KitCoil-Over: an automotive suspension device which refers to a spring or "coil" mounted over the damper (shock or strut).

There are advantages to the coil-over versus a conventional spring and damper system that include ease of installation and simplified height and stiffness adjustment. Many coil-overs offer easy fine-tuning that's not available from conventional suspension systems.

Coil-Over Kits are available for many German vehicles such as Porsche, BMW, Audi, and Mercedes-Benz. There are also many domestic and Japanese fitments for cars such as Corvette, Mazda Miata and RX7, Nissan GT-R, 350/370Z, and many others.

Project STR Captures THREE Divisional Championships

Monday, August 9, 2010 by Tire Rack Motorsports
It’s been a busy two weeks for Project STR.

Our first outing took us to Miller Park in Milwaukee, WI for the CENDIV Divisional Championship. This area has been a hotbed for street tire competition with plenty of fast drivers to help us gauge our performance. GRM/Tire Rack drivers Chris Harvey and John Rogers traded fast times both days. Chris pulled out the win with really quick times on his fourth and fifth runs.

Fast forward one week to the Great Lakes Divisional Championship in Peru, IN. This site is the best simulation of the Nationals course surface we can find east of the Mississippi. The battle was tight all weekend, with Chris Harvey out in front after day one by just 0.060 seconds. The course on day two was fast and hard to visualize in a few spots, but that didn’t slow down team STR. John Rogers threw down a crushing second run that no one could match, but it wasn’t enough to make up for his deficit from day one. Chris Harvey was second-quick for the day just 0.4 second back with autocross legend Jim McKamey less than a tenth behind.
Nick Jackson experimented with a wing on his S2000, and ultimately went faster without it. After two days, the three trophy spots were covered by a scant 0.078 second, with Chris Harvey, Nick Jackson and John Rogers finishing first through third respectively. Tire Rack driver Angie Rogers also got her first taste of the MX-5 this season, winning the STR Ladies championship and getting primed for Nationals next month.

If the competition at the Tire Rack SCCA Pro Solo Finale and Solo National Championship in Lincoln, NE next month is this tight, it’s going to be a heck of a battle to see what driver/car/tire combination comes out on top. We think we’re ready for the challenge.

Controlling the contact patch is job-one to going fastOur efforts to fine-tune the suspension set-up on Project STR are paying off, as shown by our recent success in competition. A close look during maximum cornering shows just how well the KW Coil-Overs and Hotchkis Anti-Roll Bars maximize the footprint and cornering power of the Dunlop Direzza Sport Z1 Star Spec tires on our MX-5.