15X8 ramcharger rims on the back, 4 1/4 backspace, with 275/60-15's. 15X6.5 rims on the front, also 4 1/4 backspace, with 215/60-15's. The rears fit well with redrilled small bolt pattern axles. When I switched to aftermarket large bolt pattern axles it got tight on the wheel lip and I had to roll it a bit. I would go 4 1/2 for sure.
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