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BigO Tire
Confirm Tire Size
Shopping for tires? Select tire size to proceed.
2021 Porsche 911 Turbo
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 20" / Rear 21"
Front Tires
245/35R20
Rear Tires
305/30R21
Original Equipment Wheel Diameter:
Front 20" / Rear 21"
Front Tires
255/35R20
Rear Tires
315/30R21
Where can I find my tire size?Where can I find my tire size?