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BigO Tire
Confirm Tire Size
Shopping for tires? Select tire size to proceed.
2015 GMC Sierra 2500 HD SLT
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"
LT245/75R17
Original Equipment Wheel Diameter: 17"
LT265/70R17
Original Equipment Wheel Diameter: 18"
LT265/70R18
Original Equipment Wheel Diameter: 20"
LT265/60R20
Where can I find my tire size?Where can I find my tire size?