Confirm Tire SizeWhere can I find my tire size?
Shopping for tires? Select tire size to proceed.
2003 Porsche Boxster Roadster S
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 18"
Front 18" / Rear 18"
Front Tires
225/40ZR18
Rear Tires
265/35ZR18
Original Equipment Wheel Diameter:
Front 17" / Rear 17"
Front 17" / Rear 17"
Front Tires
205/50ZR17
Rear Tires
255/40ZR17