I'll be purchasing some 15X8 rims soon and not sure of what backspacing. The style of rim only offers two different backspacing. With a 3.5 inch lift and 31X10.50X15 tires, would a 3.75 or 4.750 backspacing be best without having to do any trimming? Thanks!

 

go with 4 or 4.25

 

here is some more info https://www.cherokeeforum.com/f2/backspacing-question-22291/