Confirm Tire SizeShopping for tires? Select tire size to proceed.
2018 Buick Regal Sportback GS
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: 18"
245/45R18Original Equipment Wheel Diameter: 19"
245/40R19 Where can I find my tire size?