hello i got a 90 cherokee with a 4 inch lift i am running 32x9.50x15 inch tires. i am looking at getting 33x12.50x15 tires and need to get 10 inch rims. does anyone know what back spacing on the rimes i will need?

 

I would go with 4-4.25 backspacing.

 

A 10" rim is overkill if you ask me. I have 8" rims with 4" of backspacing and 33x12.50's.

 

If you run 10" rims you won't be able to air down near as much as with an 8". I've run 13.50s on an 8" rim without issue.

 

With the wider wheel, it will not benefit your tires at all. They wont squat enough to help your traction.