Not sure what rimDiameter size options are for your 1990 Porsche 928 GT?
Choose from the options below.
Version/Option
Tire Size
245/45R16
Version/Option
Tire Size
225/50R16
Version/Option
Tire Size
Front: 225/50R16, Rear: 245/45R16
Version/Option
Tire Size
245/45R16
Find your version / option
There are two places to find your tire size. Look directly on your tire sidewall or inside your driver’s side door jamb for your vehicle’s tire size.
Passenger Tire Sidewall
High Flotation Tire Sidewall
Inside Your Door Jamb