Not sure what rimDiameter size options are for your 2018 GMC Sierra 1500 Standard?
Choose from the options below.
Version/Option
Tire Size
265/70R17
Version/Option
Tire Size
255/70R17
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