Regardless of size, a tire's handling and durability is directly tied to using the appropriate inflation pressure for the vehicle. With a variety of wheel and tire choices for new vehicles, it's essential to rely on the vehicle manufacturer to specify the appropriate inflation pressure for the tires. Using the vehicle's weight capacity for each axle and other considerations, the manufacturer can best calculate the psi needed to ensure the tire handles and performs well.

All too often, many drivers and mechanics assume the maximum tire pressure listed on the tire's sidewall is what is recommended for proper inflation. However, that number represents the maximum pressure that's safely allowed, but is likely higher than what is recommended by the vehicle manufacturer.

Tire pressure can vary on several things, including:

For best results, look for a placard on the inside of the driver's door or a similar chart in the owner's manual to determine the recommended psi for your application.

All too often, many drivers and mechanics assume the maximum tire pressure listed on the tire's sidewall is what is recommended for proper inflation. However, that number represents the maximum pressure that's safely allowed, but is likely higher than what is recommended by the vehicle manufacturer.

Tire pressure can vary on several things, including:

For best results, look for a placard on the inside of the driver's door or a similar chart in the owner's manual to determine the recommended psi for your application.

Assuming the tire size you listed is the original equipment size, then inflate to the PSI recommended by the car manufacturer. If it is an optional size, please call in for more information

Goodyear only gives us a maximum PSI for specific tire sizes, nothing that is vehicle specific. Given the load indexes of your tires are higher than stock (they can carry more load than OE), you can still safely use 36 PSI.

Assuming you have a Wrangler, then you can still use the recommended PSI from Jeep as the 18" tire has the same load capacity as the stock tires. Should be 30 psi front and 35 psi rear.

For 265/70R17 size, GM requires at least 30 PSI for reference.

I'll need a little more information on your vehicle (like the model year) as the only size we've used for your vehicle is a 255/45R18 at 30 PSI recommended. A 225/40R18 size would be 2 inches smaller in diameter so we'd never recommend that size for use on the CL550

While the Firestone has quite a bit more load capacity given its size and reinforced sidewall, we'd still have you at 35 PSI minimum to keep the tire happy. You can inflate to up to 80 PSI per Firestone, but since the Nissan does not have near the axle load capacity to do any heavy hauling you're still fine at 35 PSI. You can can go over that number (and up to 80 PSI cold) if you want to increase the firmness of the tire, but that would be up to you.

the BFGoodrich g-Force T/A KDW-2 on a 2000 camaro SS?

Its difficult to give a recommended PSI without knowing the tire size. Please give us a call for more information.

Thank you.

Even with the larger tire, the recommended PSI will still be enough to carry the weight of the vehicle safely (even at full load). If you want, you can go up to 36 PSI if you want to make the tires feel a little "firmer" without creating any irregular wear.

Without knowing the load rating for your axles, I'd have you run 36 PSI (cold) to make sure you the tires carry enough weight to be safe.

I'd have you run 36 PSI (cold) to make sure you the tires carry enough weight to be safe.

Without knowing the specific year and model of your car we could not recommend a tire pressure. For best results please call in with your vehicle information. Thanks !

Saturn requires 30 PSI for your tire size.

I'd have you use around 34 PSI given the low profile tire

The previous tires were the same size, but E-Rated and required 46 psi. What should be the recommended tire pressure for C-Rated tires.

I understand the 46 psi was due to the government recommendation for all E-Rated tires. This seems too high.

With a 6 ply or standard load tire, Toyota requires 32 PSI for reference

OEM BFGoodrich Rugged Trail T/A P275/65R18 114T SL

Replaced with Michelin LTX M/S2 LT275/65R18 123/120R E

When the tires were rotated, the tech looked at the door sticker,

and let out a bunch of air. These load-rated E "Light Truck" tires

look very under-inflated at 40psi. What PSI should they be at for

lightly-loaded highway driving?

80 PSI is max (cold) pressure for the Michelins, and while 40 PSI is safe to use from a load capacity standpoint the tire may look a little better at 50 psi.

Based on the weight of the Expedition, I'd have you use at least 40 PSI, and you can add pressure (up to 65 lbs. cold) to tune the tire for ride comfort or looks. (see Mark's post above)

Assuming you have the Yokohama AVID S33d, max cold pressure is 44 PSi per the manufacturer. Given that this is the Original Equipment size, you would follow Toyota's guideline of 32 PSi (cold).

215/45ZR17 91W extra load

We' recommend 35 PSI. If you changed wheels and tires, you may have to have a dealership reprogram the car for new sensors unless the old sensors were reused.

If your tires are 10 ply rated (also known as E load), 50 PSI would be ideal.

You are correct that at 29 PSI, the 235/75R15 will carry the same load as he 235/70R15 at 32 PSI. It's not going to hurt the taller tire to run the 32 PSI, so either setting is fine

I have always used 30 psi I have now replaced two sets of Mich. hydro-edge at about 40,000 mi. ( 90,000 mi tire )

on both sets outer and inner tread completely worn down to the steal belt as if they were under inflated any ideas?

The max PSI on your tire has no bearing on the PSI needed to carry the weight of your car safely. At 36 PSI the tire will carry a little more load and corner a little better than at 32 PSI, so feel free to bump it up if you want.

Assuming your alignment is good (and that you are using the stock tire size), the wear pattern you mentioned does make it sound like the tires are underinflated. I'd say go ahead and bump up to around 35 PSI and experiment a little (but stay below max cold pressure as listed on the tires).

I'd probably have your use around 36 PSI, since the Tacoma is pretty lightweight (compared to the load capacity of the oversized tire) it shouldn't take much more. You can go up from there if you want to tune for handling reasons

Rhanks.

Without knowing what kind of vehicle you have I really could not say. Sorry !

To make sure the tire wears evenly across the entire tread face, I'd stick with the 35 PSI

265/70-17 is fine

36 PSI is recommended

The 275/65R18 tires are going to ride a little harsher due to the "LT" or ten ply load rating. Minimum of 50 PSI is recommended

Whats the tire pressure 205/50/15 for ek sedan Si?

Thanks,

A minimum of 30 PSI would be ideal

You'll need a minimum of 32 PSI, but it wouldn't hurt to add a couple PSI to account for extreme cold temperatures (the tire will lose 1 or 2 PSI for every 10 degree drop in temperature

You should be at 29 front and 32 rear for the stock size. I think you may have read that backwards. For proper wear I'd run around 35 psi.

The 80 PSI number noted on the tire is used as a reference for the installer; the tire is not to be inflated over 80 PSI when mounting on the wheel. For normal use, GM requires 60 psi front and 70 psi rear. At the higher pressure, you run the risk of premature wear to the tire.

Your tire sixe is used as part of the Z71 package, and GM recommends a minimum of 30 PSi for reference.

For the stock tire size, Toyota requires 30 psi minimum

Thanks

40 psi would be the minimum please

Given that the 265/50R20 has less load capacity than your stock tires, you'll run around 42 PSi to have a little extra safety range.

With a lightweight vehicle like the FJ, 36 PSi would all that is needed to carry the load, but you could go up to 50 PSi if you wanted to "firm up" the sidewall

We'd need to know the vehicle the tires are going on, please

Chevy recommends 30 PSi

At 36 PSI, you current tires will have sufficient load capacity to be safe, but you can go a little over that if you wish. I'd say go no higher than 42 otherwise you run the risk of the tires wearing abnormally