Confirm Tire SizeWhere can I find my tire size?
Shopping for tires? Select tire size to proceed.
2012 GMC Sierra 3500 HD Denali
GMC equips your vehicle with more than one possible size during production.
Please select the size installed on your vehicle from the choices below.
Original Equipment Wheel Diameter: 17"
LT235/80R17Original Equipment Wheel Diameter: 18"
LT265/70R18Original Equipment Wheel Diameter: 20"
LT265/60R20