Here's my 2001 Cummins 2500.
5" Tuff Country Lift
37x12.5x17 BFG ATs
Stock 17" 8 bolt rims from 3rd generation Cummins.
I am wondering what the maximum tire size is I can run with this set up? I will be buying new rims as well. I am looking at getting 37/38" tires and want to run a wide tire, 14.5 or 15.5s but Im not sure what back spacing/offset I will need to clear such wide tires. I don't mind if I have to do a bit of inner fender trimming.