correct air pressure????
Melting Slicks
Joined: Sep 2006
Posts: 2,041
Likes: 4
From: Rockford Illinois
Le Mans Master
Joined: Sep 2003
Posts: 8,847
Likes: 795
From: Longview Texas
So what three pressures did the tire shops recommend?
Keep them close to 30 psi. I run a pound or two less in the rear because they seem to wear more in the middle than the front tires.
Keep them close to 30 psi. I run a pound or two less in the rear because they seem to wear more in the middle than the front tires.
Le Mans Master
Joined: Sep 2004
Posts: 5,707
Likes: 4
From: Los Angeles
It says right on your door how much to put. 30 cold. But I agree with about 2 lb less in the rear.
Tech Contributor
Joined: Oct 1999
Posts: 41,058
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From: Charlotte, NC (formerly Endicott, NY)
Tech Contributor
Joined: Dec 1999
Posts: 32,910
Likes: 2,402
From: Anthony TX
CI 6,7,8,9,11 Vet
St. Jude Donor '08
You really need to determine the exact pressure your tire needs by looking at your tires. If you drive your car straight down a flat road/surface, stop and get out and look at your tires, you will see all the contact points and how far across the tire your using. It should be right up to the shoulder of the tire. All that said; it usually works out to 27 - 28 in the rears and 30 in the front. In the summer I have even dropped the rears down to 26 because they expand a lot. I get fairly even tire wear that way and it doesnt effect handling at all.
That seems low to most people who are use to driving cars with much narrow tires that need to be inflated with more pressure BUT thats what works well on a wide tire. A lot of shops will tell you to run 32-35 psi!
You will find that it makes the tires ride harsh and they will wear a lot more in the centers severely shortening tire life significantly.
As you drive the car and the tires heat up you will see the pressure rise 2-3 psi. I find my self adjusting the pressures a lot in the spring and late fall to keep them where they work best.
Your TPS will alarm at anything below 25 PSI.
BC
That seems low to most people who are use to driving cars with much narrow tires that need to be inflated with more pressure BUT thats what works well on a wide tire. A lot of shops will tell you to run 32-35 psi!
You will find that it makes the tires ride harsh and they will wear a lot more in the centers severely shortening tire life significantly. As you drive the car and the tires heat up you will see the pressure rise 2-3 psi. I find my self adjusting the pressures a lot in the spring and late fall to keep them where they work best.
Your TPS will alarm at anything below 25 PSI.
BC
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