Hi everyone ,
I have a final question before ordering.
I am going to get four 15-7 black rims from Jegs called Black "D" Windows and four 31-10.5-15 mud tires similar to the good year mud tires, and no suspension lift other than the torsion bar cranked almost to the max. The tires are made by Summit. I am sure that I'll have to do some trimming on the front flares. I just hate to order somsthing that's not going to fit. Tha truck is a 4cyl 98 Frontier.
Tahnks

Do you know the backspacing on the rims?

Depending on that, you shouldn't have to crank the tbars too much...if you crank them too far, you'll be on the bumpstops and will be left with no down travel in the suspension.

You'll also need to realign the front end after your tbar adjustments.

I have about 3/4 of an inch from the bump stops. the back spacing on the black rims are 4", and the chrome ones are 3 3/4". Tahnks

You should be fine. A lot of trucks came stock with 31's..

Thanks for the info.