2017 BMW 320i Tire Sizes

Factory original equipment (OE) tire specifications.

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Base

Tire Size
225/50R17
Load Index
94
Speed Rating
V

Base

Tire Size
225/45R18
Load Index
91
Speed Rating
V

Base

Front
Tire Size
225/45R18
Load Index
91
Speed Rating
Y

Base

Rear
Tire Size
255/40R18
Load Index
95
Speed Rating
Y

Base

Front
Tire Size
225/45ZR18
Load Index
95
Speed Rating
(Y)

Base

Rear
Tire Size
255/40ZR18
Load Index
95
Speed Rating
(Y)