1997 BMW M Roadster tire and wheel sizes, bolt pattern and tire pressure

Bolt pattern 5x120 on every 1997 trim.

Tires for the 1997 BMW M Roadster

Sizes most trims come with first. Open your trim below for its exact size.

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Open a trim for its tire and rim sizes, bolt pattern and tire pressure.

1997–2003 1 trim

M Roadster M 3.2i 316 hp · S50B32 I6 225/45R17 90Z / 245/40R17 91Z 1 fitment

Check price on Amazon · 225/45R17 Check price on Amazon · 245/40R17 Wheels 17x7.5 ET41 · 5x120 · 72.6 mm on Amazon

Tire size	Rim size and bolt pattern	Pressure, psi
Front225/45R17 90Z	Rim 17x7.5 ET41 5x120	29 psi
Rear245/40R17 91Z	Rim 17x9 ET8 5x120	29 psi

What these columns mean

Rim size: Rim diameter × width in inches, and the factory offset (ET) in millimetres, e.g. 18x7.5 ET25.
Bolt pattern (PCD): Number of studs and the diameter of the circle they sit on. It must match exactly.
Center bore: Diameter of the hub hole. Larger aftermarket bores need hub-centric rings.
Pressure: Recommended cold inflation pressure for that axle, in psi.
Staggered: A wider tire on the rear axle than the front. Front-to-back rotation is not possible.
Thread size: Lug bolt or nut thread — needed when buying aftermarket fasteners.