Yeah, so you have that EXACTLY BACKWARDS. Air increases in volume when it heats up, so your tires gain pressure with increasing temperature. The only way you would lose pressure is if you filled your tires at high temperature (say a heated garage) and then drove around on a cold day at speeds low enough to not heat the tires from friction. In addition, you should only have roughly 1 PSI of pressure change for every 10 degrees of temperature change, so a big difference in ambient temp outside (for example 70F to 30F) isn't going to make the pressure fluctuate more than a couple of PSI.

My girlfriend, who knows almost nothing about cars, knows that relationship backward and forward. Maybe you should start learning before you give advice....

 

Fabrik8 you have a pm

 

Great PM. I drive a WRX because I live in Colorado and it snows here at least once a weeks all winter and most of the spring. Front wheel drive cars suck in the snow. I'm not debating this, it's not debatable. Rear wheel drive cars aren't much better most of the time. Any other questions?

I'm not normally an asshat, but I really don't like when someone gives advice or whatever that is totally wrong. I'm done.

 

10 psi is a big differance, plus the fact that they put a tire on backwards... id be getting more than a free key chain when i went back to see them about it...


and yeah you do gain psi with heat... not loose it...

 

Two different places did the mount and the 30k.

The tire backwards is understandable when you look at the sidewall and the rotational thing, the 42+psi isn't.