tirewheelguide

2003 BMW Z4 tire and wheel sizes, bolt pattern and tire pressure

Bolt pattern 5x120 on every 2003 trim.

Tires for the 2003 BMW Z4

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

  1. 225/50R16 Best-rated standard on 2 trims · optional on 6 · Europe, Japan, USA
    Check price on Amazon · 225/50R16
  2. 225/45R17 Best-rated standard on 2 trims · optional on 6 · Europe, Japan, USA
    Check price on Amazon · 225/45R17
  3. 225/45R17 front + 245/40R17 rear Best-rated standard on 2 trims · USA
    Check price on Amazon · 225/45R17 front Check price on Amazon · 245/40R17 rear

Also listed: 205/55R16 225/40R18 + 255/35R18 225/40R18

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Trims sold in 2003
8
Generation
I (E85, E86) sold in 3 market versions

8 trims sold in 2003

Sold in 3 market versions with different tire sizes. Open a trim for its tire and rim sizes, bolt pattern and tire pressure.

BMW Z4 I (E85, E86)

2002–2005 8 trims

Europe

3 trims
Z4 2.2i 168 hp · M54B22 I6 225/40R18 88W / 255/35R18 90W 8 fitments
Generation
E85 · 2002–2005
Market
Europe
Power
168 hp
Engine
M54B22 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 ET47 · 5x120 · 72.6 mm on Amazon
Tire sizeRim size and bolt patternPressure, psi
Front225/40R18 88WRim 18x8 ET47 5x12030 psi
Rear255/35R18 90WRim 18x8.5 ET50 5x12033 psi
Front225/40R18 88WRim 18x8 ET47 5x12030 psi
Rear255/35R18 90WRim 18x8.5 ET50 5x12033 psi
205/55R16 91VRim 16x7 ET47 5x12030 psi
225/50R16 92VRim 16x7 ET47 5x12030 psi
205/55R16 91HRim 16x7 ET47 5x12030 psi
225/50R16 92VRim 16x7 ET47 5x12030 psi
225/50R16 92HRim 16x7 ET47 5x12030 psi
225/45R17 91WRim 17x8 ET47 5x12030 psi

How to read 88W: 88 is the load index (up to 1,235 lb / 560 kg per tire) and W the speed rating (up to 168 mph / 270 km/h). ET47 is the wheel offset: how far the mounting face sits from the rim centre, in millimetres. Compare offsets in the wheel offset calculator.

Z4 2.5i 189 hp · 2.5L M54B25 I6 225/50R16 92V 7 fitments
Generation
E85 · 2002–2005
Market
Europe
Power
189 hp
Engine
2.5L M54B25 I6, Petrol
Center bore
72.6 mm
Bolt pattern
5x120
Thread
M12 x 1.5
Check price on Amazon · 225/50R16 Wheels 16x7 ET47 · 5x120 · 72.6 mm on Amazon
Tire sizeRim size and bolt patternPressure, psi
225/50R16 92VRim 16x7 ET47 5x12030 psi
225/50R16 92VRim 16x7 ET47 5x12030 psi
205/55R16 91HRim 16x7 ET47 5x12030 psi
225/50R16 92HRim 16x7 ET47 5x12030 psi
225/45R17 91WRim 17x8 ET47 5x12030 psi
225/40R18 88WRim 18x8.5 ET50 5x12030 psi
225/40R18 88WRim 18x8.5 ET50 5x12030 psi

How to read 92V: 92 is the load index (up to 1,389 lb / 630 kg per tire) and V the speed rating (up to 149 mph / 240 km/h). ET47 is the wheel offset: how far the mounting face sits from the rim centre, in millimetres.

Z4 3.0i 228 hp · 3.0L M54B30 I6 225/45R17 91W 4 fitments
Generation
E85 · 2002–2005
Market
Europe
Power
228 hp
Engine
3.0L M54B30 I6, Petrol
Center bore
72.6 mm
Bolt pattern
5x120
Thread
M12 x 1.5
Check price on Amazon · 225/45R17 Wheels 17x8 ET47 · 5x120 · 72.6 mm on Amazon
Tire sizeRim size and bolt patternPressure, psi
225/45R17 91WRim 17x8 ET47 5x12033 psi
225/50R16 92HRim 16x7 ET47 5x12033 psi
225/40R18 88WRim 18x8.5 ET50 5x12033 psi
225/40R18 88WRim 18x8.5 ET50 5x12033 psi

How to read 91W: 91 is the load index (up to 1,356 lb / 615 kg per tire) and W the speed rating (up to 168 mph / 270 km/h). ET47 is the wheel offset: how far the mounting face sits from the rim centre, in millimetres.

Japan

3 trims
Z4 2.2i (GH-BT22) 168 hp · 226S I6 205/55R16 91V 8 fitments
Generation
E85 · 2002–2005
Market
Japan
Power
168 hp
Engine
226S I6, Petrol
Center bore
72.6 mm
Bolt pattern
5x120
Thread
M12 x 1.5
Check price on Amazon · 205/55R16 Wheels 16x7 ET47 · 5x120 · 72.6 mm on Amazon
Tire sizeRim size and bolt patternPressure, psi
205/55R16 91VRim 16x7 ET47 5x12030 psi
205/55R16 91HRim 16x7 ET47 5x12030 psi
225/50R16 92VRim 16x7 ET47 5x12030 psi
225/50R16 92HRim 16x7 ET47 5x12030 psi
225/50R16 92VRim 16x7 ET47 5x12030 psi
225/45R17 91WRim 17x8 ET47 5x12030 psi
225/40R18 88WRim 18x8.5 ET50 5x12030 psi
225/40R18 88WRim 18x8.5 ET50 5x12030 psi

How to read 91V: 91 is the load index (up to 1,356 lb / 615 kg per tire) and V the speed rating (up to 149 mph / 240 km/h). ET47 is the wheel offset: how far the mounting face sits from the rim centre, in millimetres.

Z4 2.5i (GH-BT25) 189 hp · 256S I6 225/50R16 92V 7 fitments
Generation
E85 · 2002–2005
Market
Japan
Power
189 hp
Engine
256S I6, Petrol
Center bore
72.6 mm
Bolt pattern
5x120
Thread
M12 x 1.5
Check price on Amazon · 225/50R16 Wheels 16x7 ET47 · 5x120 · 72.6 mm on Amazon
Tire sizeRim size and bolt patternPressure, psi
225/50R16 92VRim 16x7 ET47 5x12030 psi
225/50R16 92VRim 16x7 ET47 5x12030 psi
205/55R16 91HRim 16x7 ET47 5x12030 psi
225/50R16 92HRim 16x7 ET47 5x12030 psi
225/45R17 91WRim 17x8 ET47 5x12030 psi
225/40R18 88WRim 18x8.5 ET50 5x12030 psi
225/40R18 88WRim 18x8.5 ET50 5x12030 psi

How to read 92V: 92 is the load index (up to 1,389 lb / 630 kg per tire) and V the speed rating (up to 149 mph / 240 km/h). ET47 is the wheel offset: how far the mounting face sits from the rim centre, in millimetres.

Z4 3.0i (GH-BT30) 228 hp · 306S I6 225/45R17 91W 4 fitments
Generation
E85 · 2002–2005
Market
Japan
Power
228 hp
Engine
306S I6, Petrol
Center bore
72.6 mm
Bolt pattern
5x120
Thread
M12 x 1.5
Check price on Amazon · 225/45R17 Wheels 17x8 ET47 · 5x120 · 72.6 mm on Amazon
Tire sizeRim size and bolt patternPressure, psi
225/45R17 91WRim 17x8 ET47 5x12033 psi
225/50R16 92HRim 16x7 ET47 5x12033 psi
225/40R18 88WRim 18x8.5 ET50 5x12033 psi
225/40R18 88WRim 18x8.5 ET50 5x12033 psi

How to read 91W: 91 is the load index (up to 1,356 lb / 615 kg per tire) and W the speed rating (up to 168 mph / 270 km/h). ET47 is the wheel offset: how far the mounting face sits from the rim centre, in millimetres.

USA

2 trims
Z4 2.5i 184 hp · 2.5L I6 225/45R17 91W / 245/40R17 91W 7 fitments
Generation
E85 · 2002–2005
Market
USA
Power
184 hp
Engine
2.5L I6, Petrol
Center bore
72.6 mm
Bolt pattern
5x120
Thread
M12 x 1.5
Check price on Amazon · 225/45R17 Check price on Amazon · 245/40R17 Wheels 17x8 ET46 · 5x120 · 72.6 mm on Amazon
Tire sizeRim size and bolt patternPressure, psi
Front225/45R17 91WRim 17x8 ET46 5x12030 psi
Rear245/40R17 91WRim 17x8.5 ET50 5x12033 psi
Front225/40R18 88WRim 18x8 ET47 5x12030 psi
Rear255/35R18 90WRim 18x8.5 ET50 5x12033 psi
225/50R16 92VRim 16x7 ET47 5x12030 psi
205/55R16 91HRim 16x7 ET47 5x12030 psi
225/50R16 92HRim 16x7 ET47 5x12030 psi
225/45R17 91WRim 17x8 ET47 5x12030 psi
225/45R17 91HRim 17x8 ET47 5x12030 psi

How to read 91W: 91 is the load index (up to 1,356 lb / 615 kg per tire) and W the speed rating (up to 168 mph / 270 km/h). ET46 is the wheel offset: how far the mounting face sits from the rim centre, in millimetres.

Z4 3.0i 225 hp · 3.0L M54B30 I6 225/45R17 91W / 245/40R17 91W 5 fitments
Generation
E85 · 2002–2005
Market
USA
Power
225 hp
Engine
3.0L M54B30 I6, Petrol
Center bore
72.6 mm
Bolt pattern
5x120
Thread
M12 x 1.5
Check price on Amazon · 225/45R17 Check price on Amazon · 245/40R17 Wheels 17x8 ET46 · 5x120 · 72.6 mm on Amazon
Tire sizeRim size and bolt patternPressure, psi
Front225/45R17 91WRim 17x8 ET46 5x12033 psi
Rear245/40R17 91WRim 17x8.5 ET50 5x12036 psi
Front225/40R18 88WRim 18x8 ET47 5x12033 psi
Rear255/35R18 90WRim 18x8.5 ET50 5x12036 psi
225/45R17 91WRim 17x8 ET47 5x12033 psi
225/50R16 92HRim 16x7 ET47 5x12033 psi
225/45R17 91HRim 17x8 ET47 5x12033 psi

How to read 91W: 91 is the load index (up to 1,356 lb / 615 kg per tire) and W the speed rating (up to 168 mph / 270 km/h). ET46 is the wheel offset: how far the mounting face sits from the rim centre, in millimetres.

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.
Trims sold in 2003
8
Generation
I (E85, E86) sold in 3 market versions
Other years
All years (2002–2026)

Considering a different size?

Compare your current tire size with the one you want: diameter change, ground clearance and speedometer error.

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