Does anyone know the off set and back spacing off stock 20's? I have a set of aftermarket rims that are 20x8.5 +30mm off set with 6.0" back space. I need to know if these will work ok or not. wondering if they will make tires rub or stick out from wheel well too far. I plan on using 305/55/20 cooper Zeon LTZ tires? HELP!

 

The OEM 20's are 8.5 inches wide with 6.5 inches of bs so those wheel will stick out 1/2 inch farther.

 

my truck has 20x8.5 with 6.1 inch backspace, pics are in my gallery.