Can someone please tell me what tire pressure I should be running while doing normal street driving with Dick Cepek FC-II 33/12.5/16's on an Unlimited... Any input would be much appreciated.

 

Draw a crayon mark across the tread pattern. Drive in a straigth line for about 100 feet. Take note of the wear. If the crayon mark has disappeared in the center of the tread you have too much air. If it has disappeared along the edges, not enough air. If it wears equally you have the correct amount of air in the tires.

 

Yeah, it's called the chalk line test. It was in JP or one of the mags a while back. I'm running 30 psi in the 35's on my Unlimited.

 

Bingo.......I did that when I had my TSL Radials and I sold them with half the tread left with 36,000 miles on them.

 

It really works better with chalk.

 

I wish I could take credit for it but I did see it in JP.

 

and remember it may be diffrent front to rear. keep a note in the glove box with the PSI written so ya do not forget

 

I'm running 30psi front, 28 psi rear on my 35x12.50's on 7.5" wide wheels.

 

Or white shoe polish. There is also the business card test--you should be able to slip a business card about 1/4" under the edge of the tire if properly inflated. If it goes farther, too much air. If less, too little air.