Tire Pressure
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Joined: Jun 2020
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From: Los Angeles
Tire Pressure
Hey guys, just a heads up.
Make sure your tire pressure isn't too high. I got my C7 GS a month ago and I felt like it was excessively ancy, even in tour mode.
The other day I looked at the doorsill sticker and it is said that your cold tire PSI should be 30PSI, I was at 34 PSI cold. I got myself a little meter and adjusted the cold PSI to get to 30.
What a world of a difference. The car feels so much better, pretty crazy how such a little adjustment can have such a bing outcome.
Make sure your tire pressure isn't too high. I got my C7 GS a month ago and I felt like it was excessively ancy, even in tour mode.
The other day I looked at the doorsill sticker and it is said that your cold tire PSI should be 30PSI, I was at 34 PSI cold. I got myself a little meter and adjusted the cold PSI to get to 30.
What a world of a difference. The car feels so much better, pretty crazy how such a little adjustment can have such a bing outcome.
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I have always kept the tires on my Corvettes at 30 psi cold - have not encountered a problem at that pressure level.
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Joined: Jul 2011
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Always good to keep track of tire pressure. About 6 months ago I test drove a brand new Miata. The ride was very rough, even the mirror was shaking on the windshield. I questioned the sales guy and he said everything gets verified when a car come in. I grabbed the pressure meter out of my car and checked and the meter pegged at over 50 psi!
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goes to show what their idea of "verified" means. My guess is the car got washed and vacuumed then thrown on the lot. They likely didn't check a thing because tire pressure would be like #2 or 3 after brakes and wheel nuts as far as safety goes.
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There was a year or two where the sticker said 35 psi for some C7's, but that was just a cheap trick by GM to get very slightly higher MPG in the testing.
As others say, you want 30 psi cold. 35 cold will degrade the ride, handling, and tire life.
As others say, you want 30 psi cold. 35 cold will degrade the ride, handling, and tire life.
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From: MOUNTAIN HOME Arkansas
Not just “low level” techs at dealers. MANY times I’ve had tires put on & they just look at MAX pressure on sidewall & fill to that. Never understand why people don’t at least try to do due diligence of checking things after any work. Just a simple visual of under the hood can save misery. 😎
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Joined: Apr 2008
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When I bought my new to me 2016 C7 and drove it home from the dealership it felt like it had no suspension. When I checked the tire pressure I found someone had put 48 psi in each of the 4 tires! I didn't notice the hard ride when I tested the car as I was in heavy traffic the for entire test.
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I was wondering about lower than 30psi. I live in Las Vegas, and it sure gets hot here in the summer. With the tire pressure set at 30psi cold, after driving in this heat, the pressure can go up to 35psi. I have a GS, and know about the wide body wheel problems. I was thinking about setting the cold pressure at 28psi, so it will go up to about 32 or 33psi while driving. What do you people think?
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I was wondering about lower than 30psi. I live in Las Vegas, and it sure gets hot here in the summer. With the tire pressure set at 30psi cold, after driving in this heat, the pressure can go up to 35psi. I have a GS, and know about the wide body wheel problems. I was thinking about setting the cold pressure at 28psi, so it will go up to about 32 or 33psi while driving. What do you people think?
Melting Slicks
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From: MOUNTAIN HOME Arkansas
With these low profile & next to no rubber between road & wheel, less air in tire means less stiff rubber to absorb some of the shock going over expansion joints, potholes, etc. Rubber with less air pressure will allow tire to flex more which COULD lead to sidewall cracking also. JMO
Last edited by madrob2020; Aug 12, 2020 at 08:26 AM.
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Joined: Jul 2019
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From: Palm Desert CA
I was wondering about lower than 30psi. I live in Las Vegas, and it sure gets hot here in the summer. With the tire pressure set at 30psi cold, after driving in this heat, the pressure can go up to 35psi. I have a GS, and know about the wide body wheel problems. I was thinking about setting the cold pressure at 28psi, so it will go up to about 32 or 33psi while driving. What do you people think?
I just replaced tires on my 2015 Honda (only had 17000 miles on them) and the difference in ride is remarkable. I knew they were getting hard by the lack of traction. I don't know how old your tires are but I think the stiffness once they harden will be the real danger to your wheels.