Correct Tire Pressure for Maxis Razor MT 40X13.5 on 17inch KMC444 beadlocks wheels

[moonie28]

Hello everyone, I need some education on how much tire pressure I should have in my tires for daily driving. My jeep weighs about 7000 lbs. I have 40 X13.5 tires with bead lock rims 17 inches. I am running 28 PSI but if there a better number I am open to ideas. Thank you

 

[ScepterToad]

In my view, pressures should be determined by weight of vehicle and capacity of the tires. Most tire companies have an inflation chart for their tires, but if you can't find your specific brand, then another brand will get you close enough. This post shows tire inflation charts for varying sizes of tires, of which your 40s are included:

https://wranglertjforum.com/threads/tire-pressure-load-chart.57495/

CAT scales are at most truck stops and they have an app that you can download, use, pay for, and get the report direct to your phone, all without leaving the comfort of your car. I generally add 10% (weight) on mine when I do them.

 

[Dirty Dog]

Ignore the charts. The charts and recommended pressures are based on a tire loaded to it's max rating. Which really isn't a thing for Wranglers with oversized tires. Do the chalk test.