Originally posted by TheGreatOne:
Newer cars are going to start coming with tire pressure "lights" they basically put a little radio transmitter in the rim inside the tire and it monitors air pressure. I' mnot sure but I think there are kits you can buy too.
Mom's 99 Buick has a tire light. Comes on every time she gets the tires rotated. Annoys her more than anything, so she's learned how to reset the light.