This is going on a stock 96 Grand Cherokee. I dont really care if it rubs a little. I've heard I can get away with it if I just trim a little off the front bumper. I need to know the best backspacing. I want these tires http://treadwright.com/Tires-31x10_50R15_OTR-P15.aspx on these wheels http://store.summitracing.com/partd...306009+4294793325+4294755963+115&autoview=sku Will it fit? And what backspacing?