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BigO Tire
Confirm Tire Size
Shopping for tires? Select tire size to proceed.
2009 Cadillac STS V
Your vehicle manufacturer’s recommended tire specs include different front and rear tire sizes (i.e. staggered fitment). Learn about Staggered Fitment
Original Equipment Wheel Diameter:
Front 18" / Rear 19"
Front Tires
P255/45R18
Rear Tires
P275/40R19
Where can I find my tire size?Where can I find my tire size?