I use standard off set rear 15 X 7 wheels with 235/75R15 radials. I also used 2" wider rear fenders so I didn't have to mess with the narrow fender to bed clearance.

On the front I have 15 x 4 rims with a 205/75 tire.

Send me your e-mail address and I can send over better pictures of the fenders if you would like to see them.

Joe