OK, all you tire experts out here in Newell Land here's a tech question, from a non-tech (challenged really):
I understand cold air is denser than hot air. Does that mean that on a cool morning, one's tire pressure would measure less over another?
For example, if I check my pressure early in the morning and its say 100 psi when normally I run 120. Do I bring the pressure up to 120 or leave it alone?