I've had a set of Magnum 500's on order since April. They are backordered thru Summit who gets them from Wheel Vintigues. Wheel Vintiques says they don't have the parts to build them. Called Specialty Wheel co and they don't have 15x6. Plan was to run 15x6 in front and 15x8 in the rear. Is anyone running 15x7 in the front and if so what tire size?