Tire pressure sensor(s)

[murlo26]

Originally Posted by melnor

Check your spare, it requires 60psi. Mine was at 40 psi when my tire pressure warning came on. Filled it back up to 60 and never saw the warning again.

You don't have your Advan's filled with 60psi i pray, do you?

[NMX]

Like multiple people have said, your actual pressure is dropping due to the colder weather. FYI, I was at a discount tire getting tires installed one morning when it was colder (in the 40's as opposed to the 60's). In less than two hours, 3 people with different cars came in because their tire pressure warning system came on. It was due to the cold weather, and Discount had to fill up the air in them. FYI, I've heard that most systems will go off when they are as little as 3 psi low. Also, your tire pressure can drop 1 psi for every 10 degrees colder it is. You just have to monitor your pressures. In this case, the system worked. You needed more air in your tires due to the colder weather. There's nothing wrong with the TPMS. You just have to listen to it.

[Brewster]

I live in LA. It's no less then 45 degrees here in late December. Are you telling me Mitsu cannot calibrate the sensors to account for cold(er) temperatures? I mean wtf do people in the Northeast do; drive around with the tire pressure warning on all winter???

LOL fail.

[salukidude]

Thanks for the mostly helpful replies (douchebag above not withstanding). This is my first TPMS so maybe there is some getting used to it. However, I actually had a puncture a few months ago and the light didn't come on until it was at 20 psi. I probably need to pay a visit to the stealer.

[Boostd4]

Originally Posted by melnor

Check your spare, it requires 60psi. Mine was at 40 psi when my tire pressure warning came on. Filled it back up to 60 and never saw the warning again.

This has no affect on the TPMS...there is no sensor in the spare. I've had my spare out since day 2 of owning the car and it's never gone off.

[mxer]

Originally Posted by jebus27

Just refill them with nitrogen..... the change in pressure is very minimal compared to regular air, during high and low temperatures... saves gas too

lol, you do realize that "regular air" is composed of 79% nitrogen and that both oxygen and nitrogen act as an ideal gas so they react the same way to a variance in temperature

[jebus27]

no not really, that 20% of oxygen is all that is needed to cause greater temperature changes, oxygen carries a lot more moisture which is what causes the greater temeperture changes, also it causes oxidation which eats away the tire. Also oxygen is a smaller molecule which permeates through the rubber faster than nitrogen. The new GTR uses nitrogen filled tire, michelin provides free nitrogen to all their employees, and all air-crafts require nitrogen filled air. but its up to u if u want to pay the extra bucks for nitrogen, or u can always just go to costco, its free for members.

[stokEd]

Originally Posted by salukidude

I mean wtf do people in the Northeast do; drive around with the tire pressure warning on all winter???

Yes.



Only kidding (not about the picture, it was really -6*.) After being on the road for a while the tires warmed up enough to turn the TPMS warning off.

[stokEd]

Here's a more clear shot :