Hey guys, Im new to the site but have done some searching and can't find quite what im looking for. I bought my ram from the dealer with factory 20s and 33x12.50 cooper discoveries stt. The salesman said it had a 2in leveling kit, im assuming mopar brand. Well the tires rub when I turn to the left hard. A guy I go to school with has the same truck with 35in grapplers with a 2in mopar kit, but has aftermarket wheels. Can some one tell me what the backspacing is on my wheels, and what backspacing i would have to have to run a larger tire? Thanks

 

Factory bs is approx 5.75"