Adir Hassid

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.

Vetteman Jack

I have always kept the tires on my Corvettes at 30 psi cold - have not encountered a problem at that pressure level.

mjcourt

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!

JMII

Yikes! That is crazy high 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.

Blu-Beast

same here

gpotski

Big tires are very temperature sensitive.

Gearhead Jim

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.

Avanti

Some years ago I experienced the same situation with another new sports car. Worthless d**ned dealer prep... and, it's not all GM by any means.

madrob2020

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. 😎

Skid Row Joe

I always check tire pressures at start up in the ICD. It's identical to using my air pressure guage.

Zjoe6

Always 30 cold. I keep an eye on them when I'm driving.

Ultimate ride

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.

6spdC6

Yep, that usually my choice on the instrument panel I do what I got to do pushing buttons, but leave it there when driving..

jimmbbo

I use 27 psi cold... gives a bit of a smoother ride without any noticeable tread wear problems...

LV Vette

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?

Skid Row Joe

Me too! I figure it's pretty important info in real time!

bjones7131

I leave mine at 28 cold, rides softer and no noticeable difference in tire ware going on 3.5 yrs. 9.5K miles. Should be easier on the cracked wheel issue as well.

madrob2020

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

Red08

Ditto

Jerrys-1LT

I live in Vegas also and was wondering the same thing. I'm sure you've noticed that our excessive summer heat makes tires hard as rocks after around 5 years. So I wonder if it would be a bad idea to run lower pressure for fear of sidewall cracking.

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.