Originally Posted by Great Laker
I upgraded to LT tires and only filled up to 50psi in them so far. Was at the dealer recently for oil change and was asking about what the max tire pressure would be before overinflation was detected setting off the warning light. He was not sure and after checking around with GM support could not get a definate answer. I was originally concerned the 1500 18" rims would not be able to handle 50-80 lbs.(i would never need 80 lbs) and i was advised that would not be an issue as long as i was in the range of tire pressure ratings on tire. Does anyone know what pressure will set off tire warning?
You didn't say what load range you put on C, D or E.
Here is Toyo's chart on pressure vs load. You need to go to page 20 for LT tires.