Right now my lil DIC display says they're all at about 35. What is normal?

 

id go with what the sidewall of the tire says, its probably 35 psi

 

all right thanks!

 

The Higher the PSI, the better the gas mileage, the longer they last, the better cornering response, but the less traction you get.


The Lower the PSI, the shorter they last, the less gas mileage you get, the worse cornering response, but the more traction you get.

I daily drive on 32psi... I Drag Race at 25psi.

 

Ok dont go by the sidewall or by anything else exept for the tire place card inside your drivers door.
On the normal cobalt its 30psi but check your door.
Chevy test differant pressures to be sure you get the best tire wear, so I would go with what they say.
Racing completly differant story..........

 

There's a tire place card in my drivers door!?? whaaa?

 

true about the traction, but the higher pressure, you usually get only marginally less grip, but you're prone to lose that grip suddenly. lower pressure holds it longer and is more predictable.

35 is probably what they should be at rissa, but yeah, your sidewall will let you know. also, there's a sticker on the inside of your door or on the frame near the door latch on the driver's side that has all that info.

 

sweeeeet! Then they're right where they should be! Oh and I remember people saying a while back they couldn't find anything in their manual about competitive mode and whatnot, I just found this slip in my dash that explains everything yesterday lol.

 

32-35 is normal

 

the actual sticker in your door jam says: F/R 33psi.

 

thank your dealer for showing it to you.....NOT!

sorry, just watched Borat

 

yes 33 psi is what is recommended the tire pressure on the tires is the max tire pressure for that tire never go with that. Also when you drive the car the tire pressure will increase due to the heat from the tires and brakes. On average when driving i see 38 to 39 psi at the tires when i start up in the morning they are 32 psi.

 

Daily drive at 35psi.. Race at... 35psi.

 

I know! those jerks =[

 

I filled mine to 40 cold, gets up to 45-46 on highway cruising. Sorry, I prefer better mileage and longevity.

The stock ss/tc tires are max press 51psi cold, so I'm well within the safety limits. Also, the door sticker is the same across all cobalt models, 95%+ of which are LS/LT, which have lower pressure tires. i.e. you can't believe EVERYTHING GM tells you.

 

wow tom, there's such a thing as overfilling. i would be surprised if the center of you tires aren't worn more than the edges.

 

Go to high and you will wear out the center of your tread before the outside, same problem with going too low, but you wear out the outside of the tread first.

33psi is the recommended and correct PSI for the 2008 - dont know about earlier years.

 

yeah 51psi is the max safe pressure before you start risking the tire separating from the rim at speed.
NOT the recommended driving pressure.

 

onstar.com says 32 psi on the diagnostic page, don't trust it

I usually put them @ 35 psi cold

 

k so they're staying at around 35

 

im running 19's 215/35/19 with 40psi

 

For what it's worth, I ran my stock Pirellis on the ss/sc to 32000 even-worn miles by keeping them inflated at 40-45 psi. Take it for what you will.

 

Yeah i kept my camaro at around 38ish...and maybe up to 40 but nooooooooooo higher. But those weren't low profiles tires or anything.

 

Not true. You go around and telling people this and then they take it literally and run 50psi thinking, OMG BIG SAVINGS!


Listen to your tire manufacturer...they know more than you.

 

what he said is 100% true, but there is a limit to both ends of the spectrum. races are won and lost on tire pressure. manufacture settings are for the common joe, if you know what you're doing, you can tweak it to great advantage.