Tire PSI

[mainer]

Remember the Ford Exploder roll over problems that plagued firestone and ford? I would like to avoid that style problem, also I would like to get the most ON ROAD milage as possible. Here is the delema...

Just put on a set of Pro Comp Mud Terrian tires...285/75 16. The tire guy said that he put 65 PSI in them...yikes! But low and behold they do take 65 psi (marked on the sidewall)

65 PSI??? that is tooooo much in my opinion, but the LC is a heavy rig. What do you guys think?

Also - thanks to seaching the forums and the suggesting on powder coating instead of spray canning the rims, I followed it. WOW. powder coating has changed. You can get it in every color and texture you can imagine. I will post a pic if anybody cares.

Once again, Jeeps are Gay.

 

[Martin White]

How about checking with the manufacturer? Pro comp would probably be able to answer that question right away by phone. But most tire manufacturers don't generally recommend running tires at max PSI. I'd be interested to hear what they have to say.

 

[NMuzj100]

My 285/75R16 Revos are also sidewall rated for 65psi but a tire engineer for Bridgestone calculated the proper pressure for a 100 to be 38psi. If Procomp can't come up with a figure try and get them to give you a load chart for the tire and then match pressure to the axle load.

If you can't get any data, try starting at 38 psi and fine tune using the methods in this Tire Pressure thread.

Also check your lug nut torque. Your tire monkey also probably believes in tightening lug nuts until the rotor squeals. "My impact wrench is rated for 150ft/lbs. Must make that the right value."

 

[macneill]

Wow, 65psi seems pretty high. I run 40 in my MTRs on the street and that seems to work just fine.