backspacing for 33 x 12.50s?

[Trailer Ray]

got a free set of four 33" mt's from my grandfathers tire shop. looking to pick up some cragars for them. 4.00 backspacing good enough? what width rim should i go with? 8? 10?

[Ktmracer419]

4" is pretty ideal for 12.50's on stock axles

[Burton58]

8" rim

[Ktmracer419]

definately 8

[cherokee-at-16]

how do you find out the backspaceing on the rims if you didn't buy/order them...Do the rims say anywhere. Mine came with soft 8's and dont know anything about em. They got 31/10.5's on them now

[Ktmracer419]

measure them

inside bead to the wheel mounting surface