After many years of working at Tire Rack, I find that it can sometimes be easy to take for granted some of the information and concepts that I use on a daily basis. One such concept called plus sizing may be well known in the tire industry, however many consumers aren't familiar with how it works.

The purpose for using lower profile tires in plus sizing is twofold. First, doing so maintains the overall diameter of the Tire & Wheel Package. This is important to keep the accuracy of your odometer, speedometer and other vehicle instrumentations. Second, plus sizing with a lower profile tire often leads to more responsive handling and a better cosmetic appearance.

Notice that while the wheel diameter increases, the tire profile decreases. It's that simple.

You don't have to do the math on your own! Our website fitment specialists already know what size to use on your vehicle.

**What is plus sizing?**

Plus sizing is the process of using larger diameter wheels mounted with lower profile tires.**Why plus size?**The purpose for using lower profile tires in plus sizing is twofold. First, doing so maintains the overall diameter of the Tire & Wheel Package. This is important to keep the accuracy of your odometer, speedometer and other vehicle instrumentations. Second, plus sizing with a lower profile tire often leads to more responsive handling and a better cosmetic appearance.

Notice that while the wheel diameter increases, the tire profile decreases. It's that simple.

You don't have to do the math on your own! Our website fitment specialists already know what size to use on your vehicle.

Thanks!!

I cannot speak for a manufacturers vehicle warranty, but the widest size we've used on the 2013 Honda CR-V on the factory 17" wheel is 235/65R17.

The Plus sizing concept in this blog is about using larger diameter wheels. We have not tried taller tires on your OE wheels for this vehicle so I am not sure if that size will fit, sorry.

Each step up in wheel diameter will result in a firmer ride. If ride quality is of utmost importance, stick with 16".

225/45R17 tires will indeed fit on 17X8" wheels.

When going to 16" on a 1998 Chevy Malibu, the correct tire sizes would be either 205/55R16 or 225/50R16. I do not have compatibility information on Chevy original wheels, sorry.

I have 225/65/17 at the moment ,and what is the purpose of spacers?

You can check out the complete list of wheel sizes and styles we carry that fit here :

http://www.tirerack.com/wheels/wtpack.jsp?affiliate=FH8

Driving a 2011 Camry LE with 215/60R16 wheels. Could I put 225/50R17 tires on these? If so, what would the effect be and what would I have to consider? Thanks!

Yes, if you purchase 17" wheels, the 225/50R17 size is recommended. Since this size maintains about the same overall diameter, there would be no negative affects on speedometer/odometer or other vehicle instrumentation.

Shop Wheel and Tire Packages by vehicle here http://www.tirerack.com/wheels/wtpack.jsp?affiliate=FH8

Those sizes are much too tall for the 2008 Honda Civic. If you plus size to 17", stick with 215/45R17 or 225/45R17.

http://www.tirerack.com/wheels/wtpack.jsp?affiliate=FH8

Plus sizing or minus sizing does not change the overall diameter (total height) of the tires, so clearances would not be changed.

We would recommend size 245/45R17 or 255/45R17 on the 2003 Ford Mustang. These wider and lower profile sizes will ride more firmly but increase handling capability and cornering grip.

Tires http://www.tirerack.com/tires/index.jsp?affiliate=FH8

Thanks

We aren't sure if the taller and wider 245/50R17 will fit properly on the 2005 Acura TL. The largest that we have fit with success has been 245/45R17.

Tires http://www.tirerack.com/tires/index.jsp?affiliate=FH8

Yes, you can indeed use 225/45R17 on your 2013 Subaru Impreza Sport Limited with no problem. This wider size is a common upgrade.

Tires http://www.tirerack.com/tires/index.jsp?affiliate=FH8

The tire size 225/50R16 will indeed fit the 2003 Chevy Malibu if you find properly fitting 16" wheels.

Thanks

Yes, with properly fitting 17" wheels, you can indeed use tire size 215/45R17 on the 2007 Honda Civic Sedan DX .

http://www.tirerack.com/snow/changeover.jsp?affiliate=FH8

215/60R16 is a bit taller than we've tried to fit on a 2006 VW Passat so I am not sure if it will fit without rubbing.

The largest that we have tried on the 2011 Malibu is 235/50R17, so I am not sure if the 245/50R17 would fit.

Tires http://www.tirerack.com/tires/index.jsp?affiliate=FH8

The largest combination we've run successfully on the 2013 VW Jetta SE would be a 19" wheel with tire size 235/35R19.

Shop wheel and tire packages for your car here : http://www.tirerack.com/wheels/wtpack.jsp?affiliate=FH8

225/60R17 is much too tall to fit any year Malibu, sorry.

I can check on this for you. What year is your F150?

My mechanic said it's no problem. Is he correct?

205/70R15 is larger than we have tried on the 2002 Toyota Camry, so we are not sure if that larger size will fit properly.

Yes, you can change all four tires to size 225/75R16 with no problems on the 2008 Ford Escape.

Unfortunately we have not tried to fit tires that are taller than the original 235/55R17 on the body style of Mustang that you own.

215/65R16 is much taller than we can recommend to fit a 2013 Mitsubishi Lancer, sorry.

Unfortunately these cars have different bolt patterns, so wheels are not interchangeable between them.

would you please tell me which wheel/tire size I can downsize to from 255/50r/20. I need winter tires for my 2013 ford explorer. 18 inch wheel maybe??

Thank you,

Joe

You can indeed minus size to 18" or even to 17" on the 2013 Ford Explorer. You can view all of the available options at the 'winter' section of our site here :

Winter Package Shop by vehicle http://www.tirerack.com/snow/changeover.jsp?affiliate=FH8

We've used up to 19" wheels with matching tire sizes that would not affect the speedometer.

http://www.tirerack.com/wheels/index.jsp?&affiliate=FH8

I have a 2013 Acura TL SH_AWD. I want to put some aftermarket rims on it and want to go a little bigger than stock. (fatter and larger rear tires) What tire sizes have you put on my specified vehicle tha tlook good? Thank you!!!

We have used a large variety of sizes on this vehicle, all the way up to 20" wheels with 255/35R20.

You can view the complete listing of wheels that will fit in all the sizes here : http://www.tirerack.com/wheels/wtpack.jsp?affiliate=FH8

Yes, 225/45R18 tires can indeed be used on a 2008 Camry with the correct 18" wheels.

You can view the complete list here :

Wheel Tire Package by vehicle http://www.tirerack.com/wheels/wtpack.jsp?affiliate=FH8

Either size works with no problem, although 195/65R15 is closer in overall diameter and a bit more narrow which would help with snow traction.

I'm unsure about Honda OEM wheel fitments as we do not sell Honda OEM wheels, but we have not found any aftermarket steel wheels that clear the brakes on the Civic EX in 15"

http://www.tirerack.com/wheels/wtpack.jsp?affiliate=FH8

I can check on this for you. What size wheels do you have on your 2003 Mustang?

235/60R18 is much too tall to fit a 2011 Ford Mustang, sorry.

When using 14" wheels on this car, we recommend tire size 175/70R14. 185/65R14 should also work fine.

The tallest 17" size we have fit on the 1997 Subaru Forester without rubbing is 215/55R17.

What model of 2003 Honda Accord is this? An EX?, an LX? V6?

We do not recommend installing tires with a shorter overall diameter due to less load capacity and safety issues.

Thank you.

I do not have cross compatibility information between different models of original wheels, sorry.

Yes, 245/40R18 is a correct Plus one size for the 2008 Honda Accord 4cyl 2 door with 225/50/17.

http://www.tirerack.com/wheels/wtpack.jsp?affiliate=FH8

Yes. Generally speaking the larger the wheel diameter (and thus the lower the tire profile) the firmer the ride will be.

To keep the same overall diameter, check out tire size 225/45R17.

http://www.tirerack.com/wheels/wtpack.jsp?affiliate=FH8#sthash.oT8pXHfH.dpuf

When plus sizing to 18" on the 2003 Toyota Camry we do indeed recommend tire size 225/45R18.

http://www.tirerack.com/wheels/wtpack.jsp?affiliate=FH8

Wheels diameter: 19 Inch

Wheels Width: 8.5 Front and 9.5 Rear

Offsets: 35 Front and 40 Rear

The recommended rim width range of 215/45R17 tires is 7"-8" so this size would not be suggested for 8.5" or 9.5" wheels.

Can I replace my 2012 volts 215/55R17 with a 235/50ZR15?

Yes, you can indeed use size 235/50R17 on the 2012 Chevrolet Volt.

The largest that we've fit on this vehicle is the factory 225/50R16, sorry.

For an 18" setup on the 2008 Honda CRV, we recommend tire size 225/60R18. Most 20" setups would use tire size 245/45R20.

http://www.tirerack.com/tires/index.jsp?affiliate=FH8

The subject of this particular blog is about plus sizing to larger diameter wheels. 215/40R17 would be a shorter and more narrow size on the same diameter of wheel and would not be recommended.

We would suggest 225/40R18 when going to 18" on the 1997 Malibu.

195/50R15 would be much too short for the Deville, sorry.

235/55R17 is too tall to fit the 1995 Mustang GT.

225/50R17 is taller than we can recommend to fit a 2003 VW GTI .

185/65R15 is larger than we can recommend to fit the 2009 Hyundai Accent GLS. When plus sizing to 15" on this car, we typically use tire size 195/55R15.

Shop Wheel Tire Packages by vehicle http://www.tirerack.com/wheels/wtpack.jsp?affiliate=FH8

Yes, you can plus size to 14" wheels using tire size 185/60R14 with no problem on the 1994 Honda Civid DX Coupe.

Shop Wheel Tire Packages by vehicle http://www.tirerack.com/wheels/wtpack.jsp?affiliate=FH8

We have not had experience with fitting 245/45R18 tires on the 2011 Accord, but we have fit size 245/40R18 and 255/40R18 with no problems.

Yes, this size tire should fit the 2004 Mustang if the wheel fitment is correct.

If you use 16" wheels, the correct sizing would be 225/55R16 or 205/60R16 depending on the wheel width. 205/65R16 is too tall.

Yes, you can indeed use 215/50R17 on the 2005 Toyota Matrix with no problems as long as your wheels are 9-7.5" wide.

http://www.tirerack.com/tires/index.jsp?affiliate=FH8

Yes, you can indeed install 255/40R18 on the 2013 Honda Accord Coupe.

http://www.tirerack.com/tires/index.jsp?affiliate=FH8

We have had reports of rubbing with 245/45R17, but we have used 235/40R17 and 245/40R17 with no problems.

http://www.tirerack.com/tires/index.jsp?affiliate=FH8

225/45R17 would fit that size wheel and vehicle with no problem.

http://www.tirerack.com/tires/index.jsp?affiliate=FH8

I can check on this for you. What size wheels do you have on your vehicle?

225/70R16 is too tall to fit the 2005 Toyota Matrix, sorry.

I'm sorry, we have not test fit this setup so I do not know if it would fit.

What is the width of the wheel, as well as the year and model of vehicle?

I'm sorry, we have not successfully fit any wheels larger than 19" on the 2007 Accord.

As long as all four tires are the same size, your vehicles drivetrain should not be affected. I cannot speak for wheel fitments that we do not sell.

When plus sizing to 16" on the 2002 Honda Civic Si, the largest size that we have fit is 205/50R16.

Tires http://www.tirerack.com/tires/index.jsp?affiliate=FH8

215/60R16 is larger than we've been able to fit on the 2010 Toyota Matrix without fitment problems.

225/50R17 is a bit larger than we've tried on the 2003 Toyota Matrix, so I am not sure if they will fit. We do know that 215/50R17 or 225/45R17 will fit.

Tires MAIN http://www.tirerack.com/tires/index.jsp?affiliate=FH8

Yes, there is a large variety wheels that fit the 2011 Honda Accord in 17". Check out the complete list here :

Shop Wheel Tire Package by vehicle :http://www.tirerack.com/wheels/wtpack.jsp?affiliate=FH8

I want to upgrade the look of my 2011 Honda Accord LX. Do you recommend running a set of 18" (not sure what tire size to use) alloy wheels on it or would 17" wheels with a 225/50/r17 be the best option?

On the 2011 Honda Accord you can plus size to 17" with 225/50R17 or 18" with size 225/45R18. Either size fits with no problem, but the 225/50R17 setup would have a softer, more comfortable ride.

Wheel Tire Package by vehicle http://www.tirerack.com/wheels/wtpack.jsp?affiliate=FH8

What is the year and model of the vehicle that you would like to install the 215/50R17 tires onto?

I want to buy a set of 17" Honda alloy wheels for my 2011 Honda Accord LX. Should I buy 17 x 7 or 17 x 7.5 wheels for 225/50/R17 tires?

Thanks in advance,

David

225/50R17 tires can be used with either 17X7 or 17X7.5" wheels with no problem.

225/55R17 is a bit larger than we've tried on the 2011 Malibu but we have fit 225/50R17 and 235/50R17 with no problem.

225/50R18 is much larger than we've tried on the 1995 Ford Taurus so I do not know if they will fit, sorry.

Thanks

215/60R16 is too tall for the 2008 Civic.

17" tires cannot fit on 18" wheels, sorry.

Neither 215/55R15 nor 225/55R15 would work on a 2012 Chevy Malibu.

We've used up to size 235/55R16 on the factory 16" wheels on the 2014 Honda Accord LX Sedan.

Yes, when plus sizing to 19" wheels on the 2011 Honda Accord, 235/40R19 is a recommended size.

http://www.tirerack.com/tires/index.jsp?affiliate=FH8

I recently bought a used 2013 Honda Accord EX-L 2.4L. The stock wheels are 17" but I want to mount 18" wheels. So you recommend size wheel and, if so, what size tire do you recommend?

Thanks in advance,

David

Right now my tire size is 205/65/r15 (all season tires) and can i switch it to 215/55/r16 with brand new rims & snow tires ? Please let me know if it affect my car or not.

Thanks in advance

Yes, you can indeed plus size to 18" wheels on the 2013 Honda Accord with tire size 235/45R18.

Shop for wheel and tire packages here http://www.tirerack.com/wheels/wtpack.jsp?affiliate=FH8

Do you recommend using a 19" x 8" wheel on a 2013 Honda Accord EX-L 2.4L and, if so, what size tire would you recommend?

Yes, you can use 19X8 wheels on this car with size 245/40R19 or 235/40R18.

Shop for wheel and tire packages here http://www.tirerack.com/wheels/wtpack.jsp?affiliate=FH8

I can check on this for you. What is the year and model of the vehicle in question?

Thanks,

Justin

I wanted to know if you recommended the below combination of tires and wheels.

I saw a 2013 Honda Accord EX-L 2.4L sedan with some 20x8.5 wheels. The tires were 245/35/ZR20. The tires were just about flush with the car and it had been dropped about 1 1/2 inches. I was surprised but it looked really clean...sort of like a BMW.

Would I have to use coil overs and would it have an adverse effect on the suspension.

Thanks in advance,

Michael

thanks

When plus sizing to 18" on the 2013 Honda Civic, the largest that we have fit is 225/40R18.

Shop for wheel and tire packages here http://www.tirerack.com/wheels/wtpack.jsp?affiliate=FH8

These two vehicles wheels are not interchangeable, sorry.

Yes, you can indeed use tire size 215/55R16 on the 2005 Mazda 6 if you purchase the correct 16" wheel fitment for it.

205/65R16 is taller than we have tried on the 2004 Honda Accord and may rub.

i want my suv to be taller. Can I go up to 235/65/18?

235/55R17 is much too large to fit the 2011 Honda Civic. The largest we've been able to fit is size 225/45R17.

http://www.tirerack.com/tires/index.jsp?affiliate=FH8#s

235/55R17 is much too large to fit the 2013 Acura ILX.

235/65R18 is too tall to fit the 2011 Acura RDX.

225/65R17 tires will fit a 2014 CRV.

As long as you have a set of properly fitting 16" wheels, you can indeed use 205/55R16 on the 2013 Honda Civic LX Sedan.

As long as you have a set of properly fitting 16" wheels, you can indeed use 205/55R16 on the 2013 Honda Civic LX.

Also, please advise what should be the tyre pressure for these new tyres. The pressure value recommended by Honda for current tyres is 30psi both front and rear.

Thanks!

We do not have data on cross fitting original equipment wheels, sorry.

You can use 225/55R16 with no problem on the 2011 Honda Accord with no modifications using 32psi.

While we have not tried tires as large as 225/55R18 on the 2008 Sebring Convertible, we have used 225/50R18 and 235/50R18 with no problem.

The subject of this particular blog is about plus sizing. We do not recommend installing tires that are shorter in total diameter/height on factory wheels as this negatively affects load capacity and tire durability.

225/50R17 and 225/60R17 tires are dramatically different in height. I know of no vehicles that both sizes would fit.

205/65R16 is too tall to fit the civic. Use 205/55R16 instead.

While 245/65R17 is taller than we can recommend to fit the 2014 Nissan Rogue, we have used 245/60R17 with no problem.

Thanks,

Joe

We've had some reports of rubbing with 225/50R17, but 225/45R17 will fit.

Yes, you can indeed use 205/60R16 on the factory wheels for the Chevy HHR with no problem.

245/55R17 is too large to fit the 2006 Mercedez E350 4Matic.

While we have not tried this size on your car, it is only about a half inch taller and half inch wider so it has a good chance of fitting.

First of all, thanks for answering all these questions; I really appreciate you taking the time to do this!

My 2012 Honda Civic Si has a tire size of 215/45r/17. Can I install 215/60/16 on them? Am I pretty much safe to install any 15-16 inch rim tires on them?

215/60R16 is too tall but you can minus size to 205/55R16 with no problem on the 2012 Civic Si. 15" wheels do not clear the brakes.

215/60R16 is too tall but you can minus size to 205/55R16 with no problem on the 2012 Civic Si. 15" wheels do not clear the brakes.

Yes you can use 17X7.5" wheels on the 2007 Honda Accord VP. To view the complete list of options, see our wheel search feature here :

http://www.tirerack.com/wheels/wtpack.jsp?affiliate=FH8

225/45R17 is actually shorter in height and load capacity than 225/50R17 and is not recommended for the 2013 BMW 320i.

235/55R17 is too tall to fit the 2010 VW Passat.

Crown victoria lx sport I want to get a set of tires that are a bit more wide what sizes do you recommend 17in wheels factory size Are 235/55R17 I'm not to satisfied with the handling. Will it mess with my air ride suspension alignment or anything else

I have a 2015 subaru wrx and OEM tires are 235/45/17. I'm looking to put on some tires for the snow which are 225/50/17. Will these snow tires fit my wrx? Thank you!

I can check on this for you. What model of 2003 Ford Escape do you have?

On a 2007 Pontiac G6 we would use tires size 225/50R17 on 17X6.5" wheels.

235/55R17 will fit the 2003 Crown Victoria with no problems.

It appears that 225/50R17 has a good chance of fitting the 2015 Subaru WRX. Just be sure to test fit before you drive on them.

What year is the Ford F150?

We do not recommend installing tires that are shorter in total diameter/height on factory wheels as this negatively affects load capacity and tire durability.

The subject of this particular blog is about plus sizing to larger diameter wheels. We do not recommend installing tires that are shorter in total diameter/height on factory wheels as this negatively affects load capacity and tire durability.

This blog is about plus sizing. We do not recommend installing tires that are shorter in total diameter/height on factory wheels as this negatively affects load capacity and tire durability.

If your goal is improved handling and quicker steering response, 275/55R20 would be preferable to the 265/65R18 sizing in most cases.

225/55R17 is too large for the 2013 Subaru Legacy.

245/65R17 is too large to fit the 2008 Honda CR-V.

235/45R17 is too large to fit a 2004 Acura TSX.

225/45R18 is the only 18" size that we've fit on the 2011 Kia Soul Sport.

Your question seems to be missing part of the tire size.

215/70R16 will indeed fit the 2008 Honda CRV with no problem.

215/55R17 is too tall to fit the 2011 Toyota Matrix.

235/55R17 is too tall to fit the 2007 Acura TL.

The subject of this particular blog is about plus sizing to larger diameter wheels. I would need the year and model of your Camry in order to answer your question about minus sizing.

I received 4 225/55 R16 tires and rims. My car is Mazda 3 with 215/55 R16 tires and rims.

Can I use the bigger ones on my Mazda?

Thanks

225/55R16 is a bit larger than we've tried on this car so I cannot say if it will fit.

When plus sizing to 17" on the 2003 Subaru Outback, use tire size 225/55R17.

http://www.tirerack.com/wheels/wtpack.jsp?affiliate=FH8

I have a 2005 Honda Accord LX Sedan, and I have all seasons 205/65R15 mounted, I bought a used Michelin Ice 205/65R16 with rims and I was wondering if anyone know if this could fit. Your comments are really appreciated.

205/65R16 is taller than we've fit on the 2005 Honda Accord LX Sedan.

14" wheels do not clear the brakes on the 2003 Toyota Camry LE

225/55R17 is too tall to fit the 2005 VW Passat.

What is the width and offset of the 17" wheels in question?

235/60R17 is taller than we can recommend to fit the 2006 Ford Crown Victoria.

255/55R17 tires do list 7" as a possible width to fit on.

245/75R16 is a truck tire size that is too large to fit a 2012 Mazda 6 Sedan.

225/60R17 is much too large to fit on the 2003 Toyota Avalon.

In order to answer your question, I would need to know the year and model of the vehicle in question.

Yes, 215/55R16 will fit the 2013 Toyota Matrix with no problem.

Yes, 215/55R16 will indeed fit on 16X6.5" wheels.

The subject of this particular blog is about plus sizing to larger diameter wheels. We do not recommend installing tires that are shorter in total diameter/height as this negatively affects load capacity and tire durability

Yes, 225/50R18 would be preferred over 215/45R18 on the 2000 Olds Intrigue.

The subject of this particular blog is about plus sizing to larger diameter wheels. We do not recommend installing tires that are shorter in total diameter/height as this negatively affects load capacity and tire durability

Thanks.

Harry.

I have18/7.5 with +52.5 offset set of rims. Can I run 245/55/18 safely on my Mazda CX-5 2.0 sport model without rubbing issues?

Many thanks

Current : 225/55r17

New: 225/45r17

Thanks for your help!

What is the year and model of the vehicle that you are trying to install these on?

The subject of this particular blog is about plus sizing to larger diameter wheels. We do not recommend installing tires that are shorter in total diameter/height as this negatively affects load capacity and tire durability.

What is the year, make, model of car and full tire sizes in question?

We have used 245/55R18 tires on the Mazda CX-5 2.0 with no reports of rubbing.

No reports of rubbing...that's awesome. I am going for 245/55R/18. Just one last question for better understanding about speedo error. Since my stock wheels are 225/65R17 and I am going one size plus... which one is "better" 235/60R18 vs. 235/55R18

Many thanks,

The correct plus one application on the 2004 VW Jetta GLI is 225/40R18.

245/55R18 is closer in overall diameter than 235/60R18 compared to 225/65R17.

235/50R17 is wider than we've tried on the 2005 Toyota Camry, so cannot guarantee that it would fit.

Wishing you, your family and the entire TIRE RACK staff a wonderful 2015

This small change in tire size would not be enough in itself to feel more sidewall flex in corners.

Either 215/55R17 or 235/50R17 should fit this car with no problem.

We do not recommend installing tires that are shorter in total diameter/height as this negatively affects load capacity and tire durability

I can check on this for you. What is the year and trim level of your Mazda CX-7?

Yes, you can use 205/55R16 with no problem.

Yes, you can put 235/45zr17 tires on a 2013 Mitsubishi Lancer ES.

They are staggered rims with the fronts previously being 235 and rears 245.

The plus sizing on your vehicle is as follows :

235/60R18, 235/55R19, 255/45R20.

235/55R17 is a bit larger than we've tried on the 2014 Toyota Avalon so we are not sure if it will fit.

What is the year and model of the vehicle in question?

Thanks,

Chas

All four tires need to be the same size.

The largest we've tried for the 2007 Yaris in 16" would be 205/50R16.

16" tires will not mount on 17" wheels.

The largest that we've fit on the 2012 Chevy Impala is 20".

Yes, this will indeed fit with no problem.

245/65R17 is larger than any size we've been able to fit on the 2012 Honda CRV.

If your tires read 225/45R17, then you have 17" wheels. 17" tires do not fit on 18" wheels.

225/50R17 is taller than any size that we've been able to fit on the 2003 VW Jetta, sorry.

Thanks for any info...

The largest that we've fit on the 2002 Odyssey is 17X8 with 235/55R17 tires.

235/55R17 is larger than we can guarantee to fit the 2002 Infiniti I35. 235/50R17 would work with no problem.

The largest 18" size that we've fit on the 2015 Silverado is 285/60R18.

For 16" sizing on the 2008 Honda Civic, we've fit up to 225/50R16.

The largest sizing we've tried on the 2008 Pontiac G6 is 245/35R20.

I can check on this for you. What is your current tire size?

The widest wheel width recommended for tire size 225/55R17 is 8".

These sizes are incomplete. To view what a full tire size should look like, see :

http://www.tirerack.com/tires/tiretech/techpage.jsp?techid=33&affiliate=FH8

The subject of this particular blog is about plus sizing to larger diameter wheels. We do not recommend installing tires that are shorter in total diameter/height on factory wheels as this negatively affects load capacity and tire durability. Additionally, we do not recommend mixing different tire sizes on this car.

195/65-15 and I want to buy 18 inches from a 2014 civic si Rims are Honda OEM Si 18X7.5 (made by Enkei) and tires are Continental ContiProContact 225/40R18

Do you think if it's fits and I'm not going to have any problems later on

Thanks