2010 BMW Z4 Tire Sizes

Factory original equipment (OE) tire specifications.

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sDrive30i

Tire Size
225/45R17
Load Index
91
Speed Rating
W

sDrive30i w/Sport Pkg.

Front
Tire Size
225/40R18
Load Index
88
Speed Rating
W

sDrive30i w/Sport Pkg.

Rear
Tire Size
255/35R18
Load Index
90
Speed Rating
W

sDrive35i

Front
Tire Size
225/40R18
Load Index
88
Speed Rating
Y

sDrive35i

Rear
Tire Size
255/35R18
Load Index
90
Speed Rating
Y

sDrive35i w/Sport Pkg.

Front
Tire Size
225/35R19
Load Index
88
Speed Rating
Y

sDrive35i w/Sport Pkg.

Rear
Tire Size
255/30R19
Load Index
91
Speed Rating
Y