Tire Air Pressure

[PontiacFan]

You two need to stop going back & forth, ...,
That reply doesn't add any value, ...
Nor does this one, but at least it makes a point.

[Scott Chab]

Sorry if our discussion on a message board is bothering you.

[Ratchet831]

I have no plans to ride anything over 275 on a stock rim at performance speeds with less than 37psi. And no, the center does not wear faster, but it's only been 5 years tho. You may do as you wish.

So you set your pressure at 37psi cold? That is going to jump up to over 40psi when they heat up at higher speeds.

It's obviously your call but I would never drive with tire pressure that high.

I should have also mentioned, that if somebody is unwilling to inflate to 37psi, they should NOT mount the 285 Firestone Firehawks on the stock rims. Stay with the 275s for sure-footed performance.

Ok, I went out and lookede at my 97 Trans Am that came stock with the 245/50/16's and my roommate's 96 Trans Am WS6 that came with the 275/40/17's and the stickers said the exact same thing on both cars. Recommended tire inflation for both cars was 30 psi cold for both front and rear. There was a second sticker on both cars that states for high speed driving, inflate the tires to 35 psi cold front and rear. Also, the sticker states if you are checking the tires hot, to add 4 pounds to what the stickers state to see if you are @ the correct air pressure. I will try to get pics of both cars' door stickers tonight and post them up.

[93hawk179]

I cant believe how low some of you are running your tires. I never run less that 35psi, but I keep them at 40psi, and 45psi for the auto cross or else you'll cook the outer edge of the front tires with the understeer these fbods have under heavy cornering.

[93hawk179]

I have no plans to ride anything over 275 on a stock rim at performance speeds with less than 37psi. And no, the center does not wear faster, but it's only been 5 years tho. You may do as you wish.

So you set your pressure at 37psi cold? That is going to jump up to over 40psi when they heat up at higher speeds.

It's obviously your call but I would never drive with tire pressure that high.

I should have also mentioned, that if somebody is unwilling to inflate to 37psi, they should NOT mount the 285 Firestone Firehawks on the stock rims. Stay with the 275s for sure-footed performance.

I have no plans to ride anything over 275 on a stock rim at performance speeds with less than 37psi. And no, the center does not wear faster, but it's only been 5 years tho. You may do as you wish.

So you set your pressure at 37psi cold? That is going to jump up to over 40psi when they heat up at higher speeds.

It's obviously your call but I would never drive with tire pressure that high.

I've checked the pressure after very heavy driving, and have not had the pressure over 40 when hot - very hot.
Like I said, you may do as you wish. If the max pressure is 44 or 50, I much rather have closer to that than too much underpressure.

Always follow the air pressure listed on the door sticker, a good example is Ford listing on their Explorers a low pressure which causes blowouts resulting in fatal accidents - the actual tire pressure was given by the tire mfgr (Firestone), but car makers decide that is too stiff, and they want their ride to be softer without correctly designing their suspension. So you'll know that even if you die, you still followed the tire pressure listing on the sticker. This will save the carmaker's lawsuit load because, of course, you'll be dead.

I have no plans to ride anything over 275 on a stock rim at performance speeds with less than 37psi. And no, the center does not wear faster, but it's only been 5 years tho. You may do as you wish.

you are correct about everything you have posted. I agree 100%

[Sideshow]

I tend to believe that the car manufacturer and the engineers that it employs in developing these cars has a pretty good idea about what works with the car that they have designed and built....I'll stick with the recommended air pressure on the door sticker that they have provided me.

[02hawk796]

I cant believe how low some of you are running your tires. I never run less that 35psi, but I keep them at 40psi, and 45psi for the auto cross or else you'll cook the outer edge of the front tires with the understeer these fbods have under heavy cornering.

Your statement is obviously correct, because I agree with it 100%. I might try to find a copy of a pic of my 285s where half the sidewall has wear from a run through twisties (our Spring Cruise Route).