Just curious. With 21" wheels what's the widest rear tire one can mount that won't rub? Compared to the stock 245/35-21 tires, 285/30-21s are 1.6" wider and virtually the same height. 295/33-21s are 2" wider and .2" higher. 305/30-21s are 2.4" wider and .4 inches taller. Any clearance issues should be on the inside fender well which I suppose could be fixed with a modestly wide wheel spacer. Any thoughts or experiences that can enlighten me?