Tire pressure / dually / TC
RAM 3500 dually that will soon have a TC on it. It's a question of what should the rear tire pressure be and I'm wondering what you run your dually at. The camper should be around 4-5k pounds. I'm ...
Forum Discussion
KKELLER14K wrote:
I ran into something with my mothers ram. Here is the issue. The tires had a higher pressure rating branded on the tire itself. I went ahead and added more to the rear tires and brought it up to max pressure when we hooked up her 5th wheel. Well what do you think happened? Took awhile to figure it out but the TPMS in her truck didn't like it...and after a bit of travel the bells and whistles were going off. We finally figured it out...lol. So the lesson here is that the TPMS is set to what the sticker is on the door sill and not to what is on the tires. FYI...always check the pressure in your spare tire...it always gets forgotten.
As to the OP's question....I always ran mine max at 80...that is what was branded on the tire I used.
You put 19.5s on a 2500 truck and the TPMS didn't like showing over the max pressure? Makes sense, since it doesn't like under the very (stupid) restrictive threshold either. You had to be over 90psi because there's a little headroom in the 80psi cold in the system.
That's unfortunate, but you can adjust the tpms thresholds with aftermarket software if you wish to run higher pressure tires.
