well since I live in Florida, I have no idea what I should do. Since its been getting cold here, my tire pressure in my tires have been getting low. My car threw the low pressure check light. Should I fill them beck up to the ideal normal pressure or leave them be? Remember that Florida is crazy and changes the temp throughout the day. What should I do?

 

the temp. outside shouldnt affect your pressure that much. check the pressure it all your tires. if not, youll prob. find a low one. fill it up accordingly.

 

For every -18F (-10C), pressures will drop by -1.5PSI (or +18F, +1.5PSI).

I just checked the weather for North Miami. The biggest difference between lows and highs I see is about 19 degrees. If you set your tire pressures at night, after the car has been sitting for three hours, or in the morning, before the sun gets a chance to beat down on the tires, you can set your tire pressures to 33psi (which I believe is the pressure on the tire decal, located on the driver's side door jamb). During the day, it should only rise to roughly 34.5PSI.

 

[QUOTE=Motorway Justice;3356513]For every -18F (-10C), pressures will drop by -1.5PSI (or +18F, +1.5PSI).

I just checked the weather for North Miami. The biggest difference between lows and highs I see is about 19 degrees. If you set your tire pressures at night, after the car has been sitting for three hours, or in the morning, before the sun gets a chance to beat down on the tires, you can set your tire pressures to 33psi (which I believe is the pressure on the tire decal, located on the driver's side door jamb). During the day, it should only rise to roughly 34.5PSI.[/QUOT

I have done some tests of my in on this and i live in nebraska where weather changes alot. yesterday morning it was 15F and then in the afternoon it was 55f. I had been checking my trucks tires to make sure they where properly inflated and the most diffence i have seen on my gauge is about half a pound. Also i check my low profile tires on my car about once a month and they are never diffrent . I havent had to add air to them in over a year.

 

Fill it up with nitrogen, then you won't have to worry about any fluctuation...

 

You will get some pressure flucuation from temp. If it's cool when you fill them, I would put about 1 psi less then the recommended pressure in (say 32 psi).

 

keep em @ 32-34 cold, adjust when needed

 

lol. your kidding right? temp has a HUGE impact on tire pressures.

To the OP. Nitrogen is your best bet if you really dont feel like dealing with the constant changes.

 

hey thanks for the help guys!

 

no i wasnt kidding. i bought my cobalt in montana. ive seen snow in august . i agree weather temp, humidity, altitude change etc. can effect tire pressure. i was under the assumtion there was a dramatic tire pressure change. guess i was wrong.