2007 GMC 1500 4x4 tire size reduction.
I am needing to increase my torque (towing power) on my truck to pull a 28 ft 5th wheel RV with a dry weight of 7,900 pounds. 2007 GMC Sierra SLE 4x4 4.8L V8 The factory tire size is P265/70 R17 (31...
Forum Discussion
so what tire size or diameter would I need to get something like a 4:10 gear ratio?
