2008 BMW Z4 Wheel Offset

Quick specs

Wheel size: 8x17 · 7x16 · 8x18 · 7.5x18
Offset: ET46 · ET47 · ET41 · ET42
Backspacing: Multiple — see configurations
Bolt pattern: 5×120
Center bore: 72.6 mm
Thread: M12×1.5
Tire size: Multiple — see configurations

OEM configurations

Configuration	Front	Rear	Offset	Backspacing	Tire	Bolt pattern	Center bore	Thread
3.0i · 3.0L, N52B30, I6, Petrol	8x17	7x16	ET46 / ET47	5.81 in	225/45R17 / 225/50R16	5x120	72.6 mm	M12 x 1.5
3.0i · 3.0L, N52B30, I6, Petrol	7x16	7x16	ET47	5.35 in	205/55R16 / 225/50R16	5x120	72.6 mm	M12 x 1.5
3.0si · 3.0L, N52B30, I6, Petrol	8x17	8x17	ET46	5.81 in	225/45R17	5x120	72.6 mm	M12 x 1.5
3.0si · 3.0L, N52B30, I6, Petrol	8x17	7x16	ET46 / ET47	5.81 in	225/45R17 / 225/50R16	5x120	72.6 mm	M12 x 1.5
2.0i · 2.0L, N46B20, I4, Petrol	7x16	7x16	ET47	5.35 in	225/55R16 / 225/50R16	5x120	72.6 mm	M12 x 1.5
2.0i · 2.0L, N46B20, I4, Petrol	7x16	7x16	ET47	5.35 in	205/55R16 / 225/50R16	5x120	72.6 mm	M12 x 1.5
2.0i · 2.0L, N46B20, I4, Petrol	8x17	7x16	ET46 / ET47	5.81 in	225/45R17 / 225/50R16	5x120	72.6 mm	M12 x 1.5
2.5i · N52B25A, I6, Petrol	7x16	7x16	ET47	5.35 in	225/55R16 / 225/50R16	5x120	72.6 mm	M12 x 1.5
2.5i · N52B25A, I6, Petrol	7x16	7x16	ET47	5.35 in	205/55R16 / 225/50R16	5x120	72.6 mm	M12 x 1.5
2.5i · N52B25A, I6, Petrol	8x17	7x16	ET46 / ET47	5.81 in	225/45R17 / 225/50R16	5x120	72.6 mm	M12 x 1.5
2.5si · 2.5L, N52B25A, I6, Petrol	7x16	7x16	ET47	5.35 in	225/55R16 / 225/50R16	5x120	72.6 mm	M12 x 1.5
2.5si · 2.5L, N52B25A, I6, Petrol	7x16	7x16	ET47	5.35 in	205/55R16 / 225/50R16	5x120	72.6 mm	M12 x 1.5
2.5si · 2.5L, N52B25A, I6, Petrol	8x17	7x16	ET46 / ET47	5.81 in	225/45R17 / 225/50R16	5x120	72.6 mm	M12 x 1.5
M 3.2i · 3.2L, S54B32, I6, Petrol	7.5x18	8x18	ET41 / ET42	5.36 in	225/40R18 / 225/45R18	5x120	72.6 mm	M12 x 1.5
2.5i (ABA-BU25) · N52B25A, I6, Petrol	7x16	7x16	ET47	5.35 in	225/55R16 / 225/50R16	5x120	72.6 mm	M12 x 1.5
2.5i (ABA-BU25) · N52B25A, I6, Petrol	7x16	7x16	ET47	5.35 in	205/55R16 / 225/50R16	5x120	72.6 mm	M12 x 1.5
2.5i (ABA-BU25) · N52B25A, I6, Petrol	8x17	7x16	ET46 / ET47	5.81 in	225/45R17 / 225/50R16	5x120	72.6 mm	M12 x 1.5
3.0si (ABA-BU30) · N52B30A, I6, Petrol	8x17	7x16	ET46 / ET47	5.81 in	225/45R17 / 225/50R16	5x120	72.6 mm	M12 x 1.5
3.0si (ABA-DU30) · N52B30A, I6, Petrol	8x17	7x16	ET46 / ET47	5.81 in	225/45R17 / 225/50R16	5x120	72.6 mm	M12 x 1.5
M Coupe (ABA-DU32) · 326S4, I6, Petrol	8x18	8x18	ET42	5.65 in	225/45R18	5x120	72.6 mm	M12 x 1.5
M Roadster (ABA-BT32) · 326S4, I6, Petrol	8x18	8x18	ET42	5.65 in	225/45R18	5x120	72.6 mm	M12 x 1.5

Wheels and hardware

Lug hardware

Wheel locks

Real-World 2008 BMW Z4 Wheel Setups

Observed aftermarket setups from documented Modified1 builds. These are individual build records — not OEM specifications and not clearance guarantees for every vehicle.

Common custom wheel sizes

Among builds in our database for this model year:

19-inch — 9 documented builds
18-inch — 3 documented builds

12 documented builds.

DiameterLayout

Staggered · 19×8 ET37 / 19×9 ET39

Documented on a 2008 BMW Z4 build — observed custom fitment, not a universal fit guarantee.

Wheel: Style 313

Front: 19×8 ET37 · 225/35R19
Rear: 19×9 ET39 · 255/30R19

Compared with OEM

Compared with the 18×7.5 ET41 OEM configuration. Calculated geometry only — not fit confirmation.

Outer edge 10.3 mm farther toward fender (more outward poke)
Inner edge 2.3 mm closer to suspension (less inner clearance)
Width +0.5" vs OEM
Diameter +1" vs OEM

View full build on Modified1

Staggered · 18×8.5 ET35 / Rear unknown

Documented on a 2008 BMW Z4 build — observed custom fitment, not a universal fit guarantee.

Wheel: Sportline CS16

Front: 18×8.5 ET35 · 225/40R18
Rear: —

Compared with OEM

Compared with the 18×7.5 ET41 OEM configuration. Calculated geometry only — not fit confirmation.

Outer edge 18.7 mm farther toward fender (more outward poke)
Inner edge 6.7 mm closer to suspension (less inner clearance)
Width +1" vs OEM

View full build on Modified1

Staggered · 19×8 ET34 / 19×9 ET34

Documented on a 2008 BMW Z4 build — observed custom fitment, not a universal fit guarantee.

Wheel: Bremmer Kraft BR05

Front: 19×8 ET34
Rear: 19×9 ET34

Compared with OEM

Compared with the 18×7.5 ET41 OEM configuration. Calculated geometry only — not fit confirmation.

Outer edge 13.3 mm farther toward fender (more outward poke)
Inner edge 0.7 mm farther from suspension (more inner clearance)
Width +0.5" vs OEM
Diameter +1" vs OEM

View full build on Modified1

18×10.5 ET15

Documented on a 2008 BMW Z4 build — observed custom fitment, not a universal fit guarantee.

Compared with OEM

Compared with the 18×7.5 ET41 OEM configuration. Calculated geometry only — not fit confirmation.

Outer edge 64.1 mm farther toward fender (more outward poke)
Inner edge 12.1 mm closer to suspension (less inner clearance)
Width +3" vs OEM

View full build on Modified1

Staggered · 19×9 ET43 / 19×10 ET24

Documented on a 2008 BMW Z4 build — observed custom fitment, not a universal fit guarantee.

Wheel: SSR GT-10

Front: 19×9 ET43
Rear: 19×10 ET24

Compared with OEM

Compared with the 18×7.5 ET41 OEM configuration. Calculated geometry only — not fit confirmation.

Outer edge 17 mm farther toward fender (more outward poke)
Inner edge 21.1 mm closer to suspension (less inner clearance)
Width +1.5" vs OEM
Diameter +1" vs OEM

View full build on Modified1

Staggered · 19×? / Rear unknown

Documented on a 2008 BMW Z4 build — observed custom fitment, not a universal fit guarantee.

Wheel: BBS CH-R

Front: 19×? · 235/35R19
Rear: — · 265/30R19

Compared with OEM

Compared with the 18×7.5 ET41 OEM configuration. Calculated geometry only — not fit confirmation.

Diameter +1" vs OEM

View full build on Modified1

Staggered · 18×8.5 / 18×9.5

Documented on a 2008 BMW Z4 build — observed custom fitment, not a universal fit guarantee.

Wheel: Forgestar F14

Front: 18×8.5
Rear: 18×9.5

Compared with OEM

Compared with the 18×7.5 ET41 OEM configuration. Calculated geometry only — not fit confirmation.

View full build on Modified1

Staggered · 19×? / Rear unknown

Documented on a 2008 BMW Z4 build — observed custom fitment, not a universal fit guarantee.

Wheel: Breyton CS

Front: 19×? · 235/35R19
Rear: — · 275/30R19

Compared with OEM

Compared with the 18×7.5 ET41 OEM configuration. Calculated geometry only — not fit confirmation.

Diameter +1" vs OEM

View full build on Modified1

Staggered · 19×? / Rear unknown

Documented on a 2008 BMW Z4 build — observed custom fitment, not a universal fit guarantee.

Wheel: OEM M6

Front: 19×? · 245/35R19
Rear: — · 275/35R19

Compared with OEM

Compared with the 18×7.5 ET41 OEM configuration. Calculated geometry only — not fit confirmation.

Diameter +1" vs OEM

View full build on Modified1

Staggered · 19×? / Rear unknown

Documented on a 2008 BMW Z4 build — observed custom fitment, not a universal fit guarantee.

Front: 19×? · 235/35R19
Rear: — · 265/30R19

Compared with OEM

Compared with the 18×7.5 ET41 OEM configuration. Calculated geometry only — not fit confirmation.

Diameter +1" vs OEM

View full build on Modified1

Staggered · 19×8.5 / 19×9.5

Documented on a 2008 BMW Z4 build — observed custom fitment, not a universal fit guarantee.

Wheel: Moven

Front: 19×8.5
Rear: 19×9.5

Compared with OEM

Compared with the 18×7.5 ET41 OEM configuration. Calculated geometry only — not fit confirmation.

Diameter +1" vs OEM

View full build on Modified1

Staggered · 19×8.5 / 19×10

Documented on a 2008 BMW Z4 build — observed custom fitment, not a universal fit guarantee.

Wheel: Miro Type 366

Front: 19×8.5
Rear: 19×10

Compared with OEM

Compared with the 18×7.5 ET41 OEM configuration. Calculated geometry only — not fit confirmation.

Diameter +1" vs OEM

View full build on Modified1

Documented diameter × width pages

Aftermarket wheel sizes with enough documented Modified1 builds for this model year. Evidence pages — not fit guarantees.

19×93 builds

Compare your own setup

See how a different width or offset sits versus an OEM configuration for this year.

OEM baseline

Open full fitment calculator

More specs for the 2008 BMW Z4

Each OEM row is a catalog configuration. Offset ranges are not collapsed when the database has exact setups. Documented aftermarket builds are observed setups only — not universal fit or clearance confirmation.