Firestone tire pressure
We have a 2012 Ram 2500 diesel SLT 4x4. We have the stock Firestone tires on it. Transforce (?) if I'm remembering correctly. LT265/70R17. What should the front and rear be at when not towing or h...
Forum Discussion
Grit dog wrote:nano wrote:
I just want to make sure I don't set them too low.
The ole biscuits numbers are about right. I run the same +\- but will go lower in the winter if running ice and snow all the time unloaded. Your dealer is full of shiiiiii....., BUT with TPMS and a 2500 you will get the tire light if you lower the tires below the preset threshold. It's around 65F/75R psi based on the 2014 models I've had. Yours may still have the light load feature to temporarily lower the threshold. But even that is too high for empty driving iirc.
2 options, lower pressure and live with the idiot light or find a dealer or shop with witech software and change the TPMS thresholds.
You will not hurt anything running with the light on, nor will you hurt anything down to about 40/30 psi for normal unloaded driving. Noting optimum pressure is a bit higher.
2012 Rams do have the light load button. I have no issues running at 45 psi on the rear and setting the light load. Only issue I have is when I get up around 55 psi. It seems like the TPMS can't figure out if it's light or heavy.
