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BigO Tire
Confirm Tire Size
Shopping for tires? Select tire size to proceed.
2015 Buick Regal Base
Buick 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"
P235/50R17
Original Equipment Wheel Diameter: 18"
P235/50R18
Original Equipment Wheel Diameter: 19"
P245/40R19
Where can I find my tire size?Where can I find my tire size?