Not sure what rimDiameter size options are for your 2021 Cadillac CT5 Premium Luxury Rear-Wheel Drive?
Choose from the options below.
Version/Option
Tire Size
245/40R19
255/35R20
245/45R18
Version/Option
Tire Size
245/40R19
255/35R20
Version/Option
Tire Size
245/45R18
Version/Option
Tire Size
245/40R19
Version/Option
Tire Size
255/35R20
Version/Option
Tire Size
245/45R18
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