Widman

On the 21" wheels, stock tire sizes are 255/40/21" and 285/35/21". The only Michelin Pilot Sport 4S sizes available are 265/40/21" and 295/35/21". Has anyone successfully jumped up in wdith with no issues? The wheels are 8.5" and 9.5", yet the tires indicate a minimum of 9" and 10".
The stock Continental fronts wore at 8K miles and would not buy them again.