tire pressure drops when it gets colder. You slowly lose air. And no, it doesn't go BACK when it gets hot.

 

[QUOTE=txgcoupe]I put 34psi in the wife's coupe and it rides like ****. Put them at 31psi.

John
QUOTE]

The recommended pressure for the 19" tires is 35 psi.

 

Look at the photo... they're 17".

John

 

newb question

do the 03 g35's have the tire pressure monitors?

 

For a gas, Pressure = Temperature * gas constant

therefore, lower temperature means less pressure and vice versa

when it gets cold, **assuming your tires are losing a negligible amount of air**, the pressure will drop, but then will return when it warms up



also, i believe the car must be driven at a minimum of 16mph for the sensors to reset, but like others have said, it takes a minute or two but you do have to be above 16mph

 

Very true, but judging by the original poster's options, I expect he has 19".

 

I have the OEM 18s and I was on a long distance drive yesterday and the light was on the whole time. I did not check the pressure but the tires looked fine. Also, I have a lot of negative camber... could this cause the light to come on because the tire is not sitting properly to the ground?