2008 Mazda RX-8 Wheel Offset

Quick specs

Wheel size: Multiple — see configurations
Offset: Multiple — see configurations
Backspacing: Multiple — see configurations
Bolt pattern: 5×114.3
Center bore: 67.1 mm
Thread: M12×1.5
Tire size: Multiple — see configurations

OEM configurations

Configuration	Front	Rear	Offset	Backspacing	Tire	Bolt pattern	Center bore	Thread
1.3i AT · 1.3L, R, Petrol	7.5x16	8x18	ET50	5.72 in	225/55R16 / 225/45R18	5x114.3	67.1 mm	M12 x 1.5
1.3i AT · 1.3L, R, Petrol	7.5x17	8x18	ET50	5.72 in	225/50R17 / 225/45R18	5x114.3	67.1 mm	M12 x 1.5
1.3i · 1.3L, R, Petrol	8x19	8x18	ET47 / ET50	5.85 in	225/40R19 / 225/45R18	5x114.3	67.1 mm	M12 x 1.5
1.3i · 1.3L, 13B-MSP, R, Petrol	8x19	8x18	ET47 / ET50	5.85 in	225/40R19 / 225/45R18	5x114.3	67.1 mm	M12 x 1.5
1.3i · 1.3L, 13B-MSP, R, Petrol	8.5x19	8x18	ET50	6.22 in	235/55R19 / 225/45R18	5x114.3	67.1 mm	M12 x 1.5
1.3i · 1.3L, 13B-MSP, R, Petrol	8.5x19	8x18	ET52 / ET50	6.30 in	245/40R19 / 225/45R18	5x114.3	67.1 mm	M12 x 1.5
1.3i (ABA-SE3P) · 1.3L, R, Petrol	6.5x15	8.5x17	ET60 / ET45	5.61 in	245/55R15 / 245/30R17	5x114.3	67.1 mm	M12 x 1.5
1.3i (ABA-SE3P) · 1.3L, R, Petrol	8x16	8.5x17	ET55 / ET45	6.17 in	205/40R16 / 245/30R17	5x114.3	67.1 mm	M12 x 1.5
1.3i (ABA-SE3P) · 1.3L, R, Petrol	7.5x17	8.5x17	ET60 / ET45	6.11 in	205/45R17 / 245/30R17	5x114.3	67.1 mm	M12 x 1.5
1.3i (ABA-SE3P) · 1.3L, R, Petrol	8x18	8.5x17	ET40 / ET45	5.57 in	245/55R18 / 245/30R17	5x114.3	67.1 mm	M12 x 1.5
1.3i (ABA-SE3P) · 1.3L, R, Petrol	9x18	8.5x17	ET42 / ET45	6.15 in	235/30R18 / 245/30R17	5x114.3	67.1 mm	M12 x 1.5
1.3i (ABA-SE3P) · 1.3L, R, Petrol	8x19	8.5x17	ET60 / ET45	6.36 in	215/45R19 / 245/30R17	5x114.3	67.1 mm	M12 x 1.5
1.3i (ABA-SE3P) · 1.3L, R, Petrol	7x18	8.5x17	ET57 / ET45	5.74 in	245/40R18 / 245/30R17	5x114.3	67.1 mm	M12 x 1.5

Wheels and hardware

Lug hardware

Wheel locks

Real-World 2008 Mazda RX-8 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:

18-inch — 18 documented builds
19-inch — 6 documented builds
20-inch — 1 documented build

25 documented builds.

DiameterLayout

Staggered · 18×9 ET35 / Rear unknown

Documented on a 2008 Mazda RX-8 build — observed custom fitment, not a universal fit guarantee.

Wheel: Konig Oversteer

Front: 18×9 ET35
Rear: —

Compared with OEM

Compared with the 18×7 ET57 OEM configuration. Calculated geometry only — not fit confirmation.

Outer edge 47.4 mm farther toward fender (more outward poke)
Inner edge 3.4 mm closer to suspension (less inner clearance)
Width +2" vs OEM

View full build on Modified1

Staggered · 18×10.5 ET15 / Rear unknown

Documented on a 2008 Mazda RX-8 build — observed custom fitment, not a universal fit guarantee.

Wheel: SSR GT-V02

Front: 18×10.5 ET15
Rear: —

Compared with OEM

Compared with the 18×7 ET57 OEM configuration. Calculated geometry only — not fit confirmation.

Outer edge 86.5 mm farther toward fender (more outward poke)
Inner edge 2.5 mm closer to suspension (less inner clearance)
Width +3.5" vs OEM

View full build on Modified1

Staggered · 18×8.5 ET38 / Rear unknown

Documented on a 2008 Mazda RX-8 build — observed custom fitment, not a universal fit guarantee.

Wheel: BBS Evo X MR

Front: 18×8.5 ET38 · 245/40R18
Rear: —

Compared with OEM

Compared with the 18×7 ET57 OEM configuration. Calculated geometry only — not fit confirmation.

Outer edge 38 mm farther toward fender (more outward poke)
Inner edge 0.1 mm closer to suspension (less inner clearance)
Width +1.5" vs OEM

View full build on Modified1

Staggered · 18×9.5 ET38 / Rear unknown

Documented on a 2008 Mazda RX-8 build — observed custom fitment, not a universal fit guarantee.

Wheel: Weds SA15R

Front: 18×9.5 ET38 · 245/40R18
Rear: —

Compared with OEM

Compared with the 18×7 ET57 OEM configuration. Calculated geometry only — not fit confirmation.

Outer edge 50.8 mm farther toward fender (more outward poke)
Inner edge 12.8 mm closer to suspension (less inner clearance)
Width +2.5" vs OEM

View full build on Modified1

Staggered · 18×9 ET40 / Rear unknown

Documented on a 2008 Mazda RX-8 build — observed custom fitment, not a universal fit guarantee.

Wheel: OZ Ultraleggera

Front: 18×9 ET40
Rear: —

Compared with OEM

Compared with the 18×7 ET57 OEM configuration. Calculated geometry only — not fit confirmation.

Outer edge 42.4 mm farther toward fender (more outward poke)
Inner edge 8.4 mm closer to suspension (less inner clearance)
Width +2" vs OEM

View full build on Modified1

Staggered · 18×8 ET30 / 18×9.5 ET35

Documented on a 2008 Mazda RX-8 build — observed custom fitment, not a universal fit guarantee.

Front: 18×8 ET30
Rear: 18×9.5 ET35

Compared with OEM

Compared with the 18×7 ET57 OEM configuration. Calculated geometry only — not fit confirmation.

Outer edge 39.7 mm farther toward fender (more outward poke)
Inner edge 14.3 mm farther from suspension (more inner clearance)
Width +1" vs OEM

View full build on Modified1

Staggered · 19×8.5 ET27 / 19×9.5 ET33

Documented on a 2008 Mazda RX-8 build — observed custom fitment, not a universal fit guarantee.

Wheel: Volk Racing TE-37

Front: 19×8.5 ET27
Rear: 19×9.5 ET33

Compared with OEM

Compared with the 19×8 ET47 OEM configuration. Calculated geometry only — not fit confirmation.

Outer edge 26.3 mm farther toward fender (more outward poke)
Inner edge 13.7 mm farther from suspension (more inner clearance)
Width +0.5" vs OEM

View full build on Modified1

Staggered · 18×9.5 ET45 / Rear unknown

Documented on a 2008 Mazda RX-8 build — observed custom fitment, not a universal fit guarantee.

Wheel: Enkei RPF-1

Front: 18×9.5 ET45 · 275/35R18
Rear: —

Compared with OEM

Compared with the 18×7 ET57 OEM configuration. Calculated geometry only — not fit confirmation.

Outer edge 43.8 mm farther toward fender (more outward poke)
Inner edge 19.8 mm closer to suspension (less inner clearance)
Width +2.5" vs OEM

View full build on Modified1

Staggered · 18×8.5 ET42 / Rear unknown

Documented on a 2008 Mazda RX-8 build — observed custom fitment, not a universal fit guarantee.

Wheel: SSR Competitions

Front: 18×8.5 ET42 · 245/40R18
Rear: —

Compared with OEM

Compared with the 18×7 ET57 OEM configuration. Calculated geometry only — not fit confirmation.

Outer edge 34 mm farther toward fender (more outward poke)
Inner edge 4.1 mm closer to suspension (less inner clearance)
Width +1.5" vs OEM

View full build on Modified1

Staggered · 19×8.5 ET38 / Rear unknown

Documented on a 2008 Mazda RX-8 build — observed custom fitment, not a universal fit guarantee.

Wheel: LUFF

Front: 19×8.5 ET38
Rear: —

Compared with OEM

Compared with the 19×8 ET47 OEM configuration. Calculated geometry only — not fit confirmation.

Outer edge 15.3 mm farther toward fender (more outward poke)
Inner edge 2.7 mm farther from suspension (more inner clearance)
Width +0.5" vs OEM

View full build on Modified1

Staggered · 18×8.5 ET38 / Rear unknown

Documented on a 2008 Mazda RX-8 build — observed custom fitment, not a universal fit guarantee.

Wheel: Work Emotion

Front: 18×8.5 ET38
Rear: —

Compared with OEM

Compared with the 18×7 ET57 OEM configuration. Calculated geometry only — not fit confirmation.

Outer edge 38 mm farther toward fender (more outward poke)
Inner edge 0.1 mm closer to suspension (less inner clearance)
Width +1.5" vs OEM

View full build on Modified1

18×9 ET40

Documented on a 2008 Mazda RX-8 build — observed custom fitment, not a universal fit guarantee.

Tires: 245/40R18

Compared with OEM

Compared with the 18×7 ET57 OEM configuration. Calculated geometry only — not fit confirmation.

Outer edge 42.4 mm farther toward fender (more outward poke)
Inner edge 8.4 mm closer to suspension (less inner clearance)
Width +2" 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.

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 Mazda RX-8

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.