I think they are 7.5" rims...but the 2007 specs varied a bit...so its a crap shoot.

Lay one on the ground w/o the tire....measure the width from ground to top lip...subtract one inch...that's the rim nominal rim width. (Or use an appropriate substitute to measure the same thing...)

Or look at what its stamped.

 

So even though the Dick Cepek tires I am looking at say to use rims from 8.5 to 10 inches wide, I am really fine to run them on the stock 7.5 wide rims?

If they do cause a problem, what would it be, say a ruined tire, or ruined rim, or a blow out, or what is the most likely problem?

 

Since the rim is slightly narrower than what they recommend, you will have to run slightly lower pressure to get an even foot print. This way you will not wear down just the centre section of the tire.

As for running with lower pressures, tires tend to have more rolling resistance; increased contact patch. More rolling resistance = more heat. Basically, what you'll find is that you have to find a happy median where the tire provides a nice wear pattern, and discipates enough heat.

Other than that you'll be fine.

 

Thank you.

So shall I guess around 28 to 30 psi then would be okay?

 

that should suffice, I like about 25, nice even wear on my BFG-KM2s on my stock Rubi Moabs. I couldn't do rims when I bought tires, so that's soon to come, thinking about the AEV Pintler beadlocks.