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BigO Tire
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2015 BMW 550i Base
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: 18"
245/45R18
Original Equipment Wheel Diameter: 19"
245/40R19
Original Equipment Wheel Diameter:
Front 19" / Rear 19"
Front Tires
245/40R19
Rear Tires
275/35R19
Original Equipment Wheel Diameter:
Front 20" / Rear 20"
Front Tires
245/35R20
Rear Tires
275/30R20
Where can I find my tire size?Where can I find my tire size?