I usually mount snows on a second set of wheels to simplify season changeovers. Someone has suggested to me that instead of buying new 19" winter tires on a second set of new 19 inch wheels, I go to a 17 inch wheel with a 17 inch tire but with a profile to create the same overall tire diameter. Creates no speedometer problems and saves $$ on the cost of tires and wheels. Questions: Would this void any of the standard MDX warranty? Would this create handling problems? Would I get better or worse tire mileage wear with the non-spec tires? This is on a 2014 MDX Tech AWD.