Recommended tire pressure?
Thread Starter
Pro
Joined: Jan 2002
Posts: 702
Likes: 0
From: York PA
Recommended tire pressure?
Hey guys,
What is the recommended tire pressure for a 93 with 285 front and 255 rears. The tag in the door jam must have been replaced when the car was painted. I have 9.5 inch rims all around, but the dumb **** who replaced the tires before me put the standard sizes on instead of the Z07 275's all around.
What is the recommended tire pressure for a 93 with 285 front and 255 rears. The tag in the door jam must have been replaced when the car was painted. I have 9.5 inch rims all around, but the dumb **** who replaced the tires before me put the standard sizes on instead of the Z07 275's all around.
Pro
Joined: May 2000
Posts: 529
Likes: 0
From: Bellevue NE
Re: Recommended tire pressure? (Hot Rod Buick)
Look on the sidewall of the tire. That is the recommended pressure. Whatever they put in the door jamb is just for ride comfort.
Uh no offense or flaming intended but this is a common misconception. The mark on the side of the tire is the "maximum" recomended pressure if the marked weight were placed up that tire. This is from the tire manufacturer. I don't have access to my car but I pulled this info on Goodyear GSC's from Tire Rack's website. 275/40ZR17 is rated for a "max" load 1433lbs at a "max" inflation of 44 PSI. That's per tire, multiply 1433 by 4 and you come up with 5732lbs. :eek: If your vette weighs that much it's time to clean out the ash tray. Each vehicle will have it's own recomended tire pressure. I know this doesn't answer the original question but I'm sure someone can shed more light from their actual experiances. I inflate mine to 30 psi front and rear. I seem to get a good balance between wear and performance at this pressure. Again this what has worked for me. What works for you will depend on your tires and style of driving. I'm sure others can give you a better answer.
Le Mans Master
Joined: Apr 2001
Posts: 7,411
Likes: 253
From: Little Elm TX
Re: Recommended tire pressure? (Jeff M)
I know the high speed recommended pressure is 35psi all the way around. I believe (cars under cover) the standard pressure for comfort is 30psi. On that note, I run 36psi in the front and 34psi in the rear for even wear. Michelin Pilots XGT Z4.
Team Owner
Joined: Sep 2001
Posts: 62,153
Likes: 1,731
From: Athens AL
C7 of the Year - Unmodified Finalist 2021
C4 of Year Finalist (performance mods) 2019
Re: Recommended tire pressure? (R94 LT 1)
its personal preference basically, you should run from 30-35psi cold all around
you can experiment with it a bit. I run 35 all around
you can experiment with it a bit. I run 35 all around
Drifting
Joined: Jul 2000
Posts: 1,661
Likes: 4
From: Phoenix, Arizona
Re: Recommended tire pressure? (HTRK-1)
Hope it was a typo - the 285s go in the rear and the 255s go in the front. However, if someone sold you the wrong sizes, go back and make a lot of noise in front of their customers. Also, in my humble opinion, you need to check the work done next time before you pay.
For pressure, use 30 all the way around. Adjust higher if autocrossing or on the track, etc. Good luck.
For pressure, use 30 all the way around. Adjust higher if autocrossing or on the track, etc. Good luck.
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Thread Starter
Pro
Joined: Jan 2002
Posts: 702
Likes: 0
From: York PA
Re: Recommended tire pressure? (NavyVet)
Hope it was a typo - the 285s go in the rear and the 255s go in the front. However, if someone sold you the wrong sizes, go back and make a lot of noise in front of their customers. Also, in my humble opinion, you need to check the work done next time before you pay.
For pressure, use 30 all the way around. Adjust higher if autocrossing or on the track, etc. Good luck.
For pressure, use 30 all the way around. Adjust higher if autocrossing or on the track, etc. Good luck.
Drifting
Joined: Jul 2000
Posts: 1,661
Likes: 4
From: Phoenix, Arizona
Re: Recommended tire pressure? (HTRK-1)
HTRK-1 - Sorry - I misread & thought you bought the tires. You will find that the 255/45s are "stretched" quite a bit on 9.5 rims, so I wouldn't try to pull 1.0 G's on the skid pad :) Maybe you can find two more 285s from the same maker & sell off the 255s?????
Good luck with your new car though - those Z07s were a good combination.
Good luck with your new car though - those Z07s were a good combination.
