Not sure what rimDiameter size options are for your 2021 BMW Z4 sDrive M40i?
Choose from the options below.
Version/Option
Tire Size
255/35R19
Front: 255/35R19, Rear: 275/35R19
275/35R19
255/40R18
Front: 255/40R18, Rear: 275/40R18
275/40R18
Version/Option
Tire Size
Version/Option
Tire Size
Version/Option
Tire Size
255/35R19
Front: 255/35R19, Rear: 275/35R19
Version/Option
Tire Size
275/35R19
255/40R18
Version/Option
Tire Size
Front: 255/40R18, Rear: 275/40R18
275/40R18
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