THe low tire pressure light came on after two nights in upstate new York , I checked my tires they aren't low , did the change in temperature set my light off ?

 

It's possible...happens to me all the time.

 

How do I turn it back off ?

 

Check the pressure and add a little air if its low then drive it for a day or two and it'll adjust the computer and turn itself off.

 

Don't forget about the spare!

 

As it gets colder, you will require a little more air pressure, cold air contracts, hot expands. When its cold out, I can get a lower pressure indication and after driving for say 30 mins my tires heat up a bit, the lower pressure indication will turn off.

Add some air and it will turn off. Always check your tires pressure when your tires are cold or cool.

 

What should I keep my 32 inch BFG mudterrians psi to ?

 

When mine went off, my tire pressure was 36 all around. I had to fill up to 40 psi and drive around the block until the light went off, then I aired down to 36 psi again.

 

Oh, get yourself an AEV Procal, so you can lower the threshold. The factory setting is way too high.

 

How much do these procals run ?