Paininthebutt

My issue is that I want to put 45 psi in my tire but it causes the message and warning to come on. Is there something I can reprogram where it won't give a warning until it drops below 45 psi?

coia96vette

Why would you want to put 45 psi in the tires when the car is designed for 30 psi? Just curious as for why.

Skyhawk23

leadfoot4

Well, his/her user name is "paininthebutt".............45 pounds of air in the tires will certainly give you that!!

FX VETTE

pjdbm

45 will easily be 48 On some hot roads too

neutron82

doesn't care about traction, uneven/premature wear, or even tire failure would be my best guess... the op could have the tpms turned off with a tech2, I don't have issues with that personally but I do not recommend running the tires at that high of a pressure

DVUSz06

So many people look at the side of a tire and it will have a "max pressure 45" and think thats what you should air to, but that is a safety warning.
There is a sticker from the manufacturer on most vechicles that has a recommended tire pressure Thats what you should run, or at the very least a starting point, those recommendations are based on tire size and weight of the vechicle. Not saying it can't be tweeked a little but an additional 50% psi over vechicle recommendation is just crazy, and a recipe for disaster.

lionelhutz

Start with the door sticker pressure and tweak from there.

For example, I run a little lower because I have wider and lower profile tires compared to stock. I wore the previous PS2's completely flat and got a LOT of miles out of them so tweaking the pressure to match the tires has worked well for me.

Paininthebutt

I have a 98 C5 and I'm running after market tires that require a minimum of 40 psi.

MSUGTO

What size of tire are you running?

GTs 58

My 1/2 TON truck specs say 39 PSI and the 02 Z is 30 PSI. The 3/4 ton Ford was 45 PSI. Guess if your going to haul 800 lbs. of sand in the trunk I'd pump em up a bit. In all my years I've never seen a factory spec over 32 psi on a car.

grantv

Don't think I've ever seen a tire state minimum pressure TBH. But I really don't look at every tire. What tire? Sure that doesn't state max?

leadfoot4

The only factory recommendation over 32 PSI, that I've ever seen, in a passenger car/SUV, is my roughly 5000 pound Jeep Grand Cherokee. The recommendation for it is 33 PSI.

Vetteman Jack

My 2015 Impala has a tire pressure recommendation of 33 psi and I've had several other cars that recommend that or higher tire pressures.

That said, I'd be curious what tires the OP has that says to run a minimum of 40 psi in them.

Yello95

...might be some new age tires...maybe space shuttle tires?

fuggles

If you look at tire pressure recommendations the tire manufacturer always states that you should check with the vehicle manufacturer for recommended tire pressures. This is because tire pressure requirements are based on vehicle weight. So your statement that the tire manufacturer requires 40psi makes no sense. This is contradictory.

GTs 58

Lost some air. The OP said 45 psi.

leadfoot4

Wonder what happened to the OP??

jcgunn

Maybe the OP is worried about hydroplaning. The minimum speed for hydroplaning (in knots) is nine times the square root of the tire pressure (in PSI) so a 30 PSI tire will hydroplane at 49 knots (56 mph), but his minimum req'd 45 PSI tires hydroplane at 60 knots (69 mph)

Just my thoughts...