2004 BMW Alpina Roadster tire and wheel sizes, bolt pattern and tire pressure

Bolt pattern 5x120 on every 2004 trim.

Tires for the 2004 BMW Alpina Roadster

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

225/40R18 front + 255/35R18 rear Best-rated standard on 2 trims · Europe, Japan

Check price on Amazon · 225/40R18 front Check price on Amazon · 255/35R18 rear
235/35R19 front + 265/30R19 rear Best-rated optional on 2 trims · Europe, Japan

Check price on Amazon · 235/35R19 front Check price on Amazon · 265/30R19 rear

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Trims sold in 2004: 2
Generation: E85 sold in 2 market versions
Other years: 2002
2003
2004
2005
2006
All years (2002–2006)

2 trims sold in 2004

Sold in 2 market versions. Open a trim for its tire and rim sizes, bolt pattern and tire pressure.

BMW Alpina Roadster E85

2003–2006 2 trims

Europe

1 trim

Roadster S 3.3 296 hp · I6 225/40R18 88Y / 255/35R18 90Y 2 fitments

Generation: E85 · 2003–2006
Market: Europe
Power: 296 hp
Engine: I6, Petrol
Center bore: 72.6 mm
Bolt pattern: 5x120
Thread: M12 x 1.5

Check price on Amazon · 225/40R18 Check price on Amazon · 255/35R18 Wheels 18x8 ET45 · 5x120 · 72.6 mm on Amazon

Tire size	Rim size and bolt pattern	Pressure, psi
Front225/40R18 88Y	Rim 18x8 ET45 ~~5x120~~	30 psi
Rear255/35R18 90Y	Rim 18x9 ET38 ~~5x120~~	32 psi
Front235/35R19 91Y	Rim 19x8.5 ET47 ~~5x120~~	30 psi
Rear265/30R19 93Y	Rim 19x9.5 ET47 ~~5x120~~	32 psi

How to read 88Y: 88 is the load index (up to 1,235 lb / 560 kg per tire) and Y the speed rating (up to 186 mph / 300 km/h). ET45 is the wheel offset: how far the mounting face sits from the rim centre, in millimetres.

Japan

1 trim

Roadster S 3.3 (ABA-PE52) 306 hp · I6 225/40R18 88Y / 255/35R18 90Y 2 fitments

Generation: E85 · 2003–2006
Market: Japan
Power: 306 hp
Engine: I6, Petrol
Center bore: 72.6 mm
Bolt pattern: 5x120
Thread: M12 x 1.5

Check price on Amazon · 225/40R18 Check price on Amazon · 255/35R18 Wheels 18x8 ET45 · 5x120 · 72.6 mm on Amazon

Tire size	Rim size and bolt pattern	Pressure, psi
Front225/40R18 88Y	Rim 18x8 ET45 ~~5x120~~	30 psi
Rear255/35R18 90Y	Rim 18x9 ET38 ~~5x120~~	32 psi
Front235/35R19 91Y	Rim 19x8.5 ET47 ~~5x120~~	30 psi
Rear265/30R19 93Y	Rim 19x9.5 ET47 ~~5x120~~	32 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.