2006 BMW Z4 Wheel Backspacing

5.81 in · 5.35 in · 5.85 in · 5.36 in · 5.65 in

Quick specs

Backspacing
5.81 in · 5.35 in · 5.85 in · 5.36 in · 5.65 in
Wheel size
8x17 · 7x16 · 8x18 · 7.5x18
Bolt pattern
5×120
Tire size
Multiple — see configurations

OEM configurations

ConfigurationFrontRearOffsetBackspacingTireBolt patternCenter boreThread
3.0i · 3.0L, N52B30, I6, Petrol8x177x16ET46 / ET475.81 in225/45R17 / 225/50R165x12072.6 mmM12 x 1.5
3.0i · 3.0L, N52B30, I6, Petrol7x167x16ET475.35 in205/55R16 / 225/50R165x12072.6 mmM12 x 1.5
3.0si · 3.0L, N52B30, I6, Petrol8x178x17ET465.81 in225/45R175x12072.6 mmM12 x 1.5
3.0si · 3.0L, N52B30, I6, Petrol8x177x16ET46 / ET475.81 in225/45R17 / 225/50R165x12072.6 mmM12 x 1.5
2.0i · 2.0L, N46B20, I4, Petrol7x167x16ET475.35 in225/55R16 / 225/50R165x12072.6 mmM12 x 1.5
2.0i · 2.0L, N46B20, I4, Petrol7x167x16ET475.35 in205/55R16 / 225/50R165x12072.6 mmM12 x 1.5
2.0i · 2.0L, N46B20, I4, Petrol8x177x16ET46 / ET475.81 in225/45R17 / 225/50R165x12072.6 mmM12 x 1.5
2.5i · N52B25A, I6, Petrol7x167x16ET475.35 in225/55R16 / 225/50R165x12072.6 mmM12 x 1.5
2.5i · N52B25A, I6, Petrol7x167x16ET475.35 in205/55R16 / 225/50R165x12072.6 mmM12 x 1.5
2.5i · N52B25A, I6, Petrol8x177x16ET46 / ET475.81 in225/45R17 / 225/50R165x12072.6 mmM12 x 1.5
2.5si · 2.5L, N52B25A, I6, Petrol7x167x16ET475.35 in225/55R16 / 225/50R165x12072.6 mmM12 x 1.5
2.5si · 2.5L, N52B25A, I6, Petrol7x167x16ET475.35 in205/55R16 / 225/50R165x12072.6 mmM12 x 1.5
2.5si · 2.5L, N52B25A, I6, Petrol8x177x16ET46 / ET475.81 in225/45R17 / 225/50R165x12072.6 mmM12 x 1.5
M 3.2i · 3.2L, S54B32, I6, Petrol7.5x188x18ET41 / ET425.36 in225/40R18 / 225/45R185x12072.6 mmM12 x 1.5
2.5i (ABA-BU25) · N52B25A, I6, Petrol7x167x16ET475.35 in225/55R16 / 225/50R165x12072.6 mmM12 x 1.5
2.5i (ABA-BU25) · N52B25A, I6, Petrol7x167x16ET475.35 in205/55R16 / 225/50R165x12072.6 mmM12 x 1.5
2.5i (ABA-BU25) · N52B25A, I6, Petrol8x177x16ET46 / ET475.81 in225/45R17 / 225/50R165x12072.6 mmM12 x 1.5
3.0si (ABA-BU30) · N52B30A, I6, Petrol8x177x16ET46 / ET475.81 in225/45R17 / 225/50R165x12072.6 mmM12 x 1.5
3.0si (ABA-DU30) · N52B30A, I6, Petrol8x177x16ET46 / ET475.81 in225/45R17 / 225/50R165x12072.6 mmM12 x 1.5
M Coupe (ABA-DU32) · 326S4, I6, Petrol8x188x18ET425.65 in225/45R185x12072.6 mmM12 x 1.5
M Roadster (ABA-BT32) · 326S4, I6, Petrol8x188x18ET425.65 in225/45R185x12072.6 mmM12 x 1.5

Compare wheel position See wheel offset

Backspacing values above are calculated from OEM wheel width and offset using BS = width/2 + offset_mm/25.4 (same formula as the fitment calculator).

Related tools

More on Amazon
  • LEXIVON 1/2-Inch Drive Click Torque Wrench 25-250 Ft-Lb/33.9-338.9 Nm (LX-184)

    Related tool — not a vehicle-fit product.

    Check price on Amazon
  • Wheeler Manual Firearms Accurizing Torque Wrench with Inch/Pounds Measurement, Bits and Storage Case for Scope Mounting, Gunsmithing and Maintenance

    Related tool — not a vehicle-fit product.

    Check price on Amazon

More specs for the 2006 BMW Z4

Backspacing on these pages is calculated from OEM wheel width and offset (width/2 + offset_mm/25.4). Higher backspacing seats the wheel farther inward; lower backspacing moves it outward.