2008 BMW Z4 Tire Sizes

Factory original equipment (OE) tire specifications.

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Coupe 3.0si

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

Coupe 3.0si w/Sport Pkg.

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

Coupe 3.0si w/Sport Pkg.

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

M Coupe

Front
Tire Size
225/45ZR18
Load Index
Speed Rating

M Coupe

Rear
Tire Size
255/40ZR18
Load Index
Speed Rating

M Roadster

Front
Tire Size
225/45ZR18
Load Index
Speed Rating

M Roadster

Rear
Tire Size
255/40ZR18
Load Index
Speed Rating

Roadster 3.0i

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

Roadster 3.0i w/Sport Pkg.

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

Roadster 3.0i w/Sport Pkg.

Rear
Tire Size
255/40R17
Load Index
94
Speed Rating
W

Roadster 3.0si

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

Roadster 3.0si w/Sport Pkg.

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

Roadster 3.0si w/Sport Pkg.

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