Any help with best tire pressure?????

rt2878 · Apr 14, 2014

Here is the problem, im running 37" nittos, my low tire indication is coming in for low pressure. the truck is equipped with a light load switch. and I currently have 58 pounds all the way around, what is the best pressure to run?

Hemi22xx · Apr 16, 2014

What nitto's you running? I'm running the mud grapplers and I'm running 45psi. No problems with low indicator. I got a 1500.

mattman_13 · Apr 17, 2014

58 is really high for a half ton. (I'm sure everyone will complain it's not. I get that a lot but I do my research and chalk my tires for wear)
Mine are at 35 with no tire warning. Mine come on around 32.
Did you use after market or factory sensors? Could be a bad sensor.

Edit for seeing your in a Cummins. They make tire pressure charts for a reason. Check nittos sight or give them a call. Still think 58 is high. I've had good luck chalking mine.

DannyMK2 · Apr 17, 2014

you have an issue with a sensor. 58 psi is way too much.

Rotzilla · Apr 18, 2014

If I remember correctly the sticker on your drivers door sill say either 65psi or 45psi, Anything outside or between those parameters is gonna kick a tpms light.

freddyx844 · Apr 18, 2014

I a have a 3rd gen and the pressure on the sticker is 35psi, im surprised its so different on 4th gens. Must be a hard ride, im actually running at 33psi.

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DannyMK2 · Apr 18, 2014

mattman_13 said:
Edit for seeing your in a Cummins. They make tire pressure charts for a reason. Check nittos sight or give them a call. Still think 58 is high. I've had good luck chalking mine.

i didnt catch that either. i run 50 psi in my CTD dually on 33" m/t's. the tire manufacturer will only tell you the max pressure the tire can hold...this isnt what you should run. go by what the sticker on the door says an inflate/deflate in 2 psi increments until you find the sweet spot. some tires run better with more/less psi.

mattman_13 · Apr 22, 2014

Somewhere I had found a chart for tire size, rim size, and weight distributed for what you should run in them.
I agree with the door sticker as a starting point. I'll never be able to find the chart again. Lol

sausec17 · Apr 22, 2014

Chalk test for sure.

I ran 50psi in my 35s and now Im running 36psi in my 37's, both mickey thompson tires and both wear evenly. Very strange

Any help with best tire pressure?????

rt2878

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