2018 BMW 340i Tire Sizes

Factory original equipment (OE) tire specifications.

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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
99
Speed Rating
(Y)

Base

Front
Tire Size
225/40R19
Load Index
89
Speed Rating
Y

Base

Rear
Tire Size
255/35R19
Load Index
92
Speed Rating
Y