2008 BMW Z4 M Roadster Bolt Pattern

Bolt Pattern
5x120mm = 5x4.72 inches
Tire Sizes
Option 1
225/45R18 = 26x8.9R18 (front)
255/40R18 = 26x10R18 (rear)

The 2008 BMW Z4 M Roadster bolt pattern is 5-120 mm. This means there are 5 lugs and the diameter of the circle that the lugs make up measures 120 mm or 4.72 inches across. To get a close measurement of your 5 lug bolt pattern without a bolt pattern tool you should measure from the center of one lug to the outer edge of the lug furthest from it.