TPMS question

[altongl]

I want to put E rated tires on my 18in. rims. I will be running at least 50 Lbs of air in them when towing. Will i have a tire warning light. Or is this light only for under inflated tires?

[mike94silverado]

I beleive you can have that adjusted at the dealer....

[altongl]

They said it could be changed on the 2500 but not the 1500.

[losky79]

I believe the 14's do not have warning lights, just the tire pressure display. I run 40 psi in my tires and the recommended pressure is 32 psi front and rear and I have never seen a warning light. Although, if I am wrong about the warning light, I will be corrected here shortly!!!

[thewhitestallion]

no you should not have a tire light on. when manufacturers starting tpms they had the tires pressure set to a thresh hold. i.e. if the tire is not between 30-40psi the tire light should come on. but with trucks that is stupid because when people tow they more than likely air up their back tires. so now they only have the light come on if it gets below a certain PSI. also when I first bought my truck they had around 40 psi in my tires and I drove like that for quite some time and on some warm days were I drove a lot I would look at the psi in the tires and they got up to around 45 psi and I had no light on. go to your local gas station and pump 50 in their and see if the light comes on. then you will know for sure.

[altongl]

Thanks a lot for the replies. I didn't think the dealership knew what they were talking about when they said it would go into alarm if it deviated 2psi from what it says on the door.

[losky79]

Now that I think about it, I have had almost 50 psi reading on the tire pressure display while driving on the interstate and no light!!!

[TJay74]

Yeppers, only triggers if under the set point.

[thewhitestallion]

also make sure to check the side of your tire and confirm that the amount of air you are putting in the tire dos not exceed the max pressure rating of the tire. the pressure rating is "cold" psi.