Not sure what rimDiameter size options are for your 2018 BMW 4 Series 440i xDrive Convertible?
Choose from the options below.
Version/Option
Tire Size
225/45R18
Front: 225/45R18, Rear: 255/40R18
255/40R18
225/40R19
225/40R19
Front: 225/40R19, Rear: 255/35R19
255/35R19
225/45R18
Version/Option
Tire Size
225/45R18
Front: 225/45R18, Rear: 255/40R18
255/40R18
225/40R19
Version/Option
Tire Size
225/40R19
Front: 225/40R19, Rear: 255/35R19
255/35R19
225/45R18
Version/Option
Tire Size
225/45R18
Front: 225/45R18, Rear: 255/40R18
255/40R18
Version/Option
Tire Size
225/40R19
225/40R19
Front: 225/40R19, Rear: 255/35R19
Version/Option
Tire Size
255/35R19
225/45R18
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