2006 Mazda RX-8 Wheel Offset

ET50 · ET47 · ET45 · ET40 · ET60 · ET42 · ET35

Quick specs

OEM offset: ET50 · ET47 · ET45 · ET40 · ET60 · ET42 · ET35
Wheel size: Multiple — see configurations
Backspacing: 5.07–6.86 in (14 configs)
Bolt pattern: 5×114.3
Center bore: 67.1 mm
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	7.5x19	8x18	ET40 / ET50	5.32 in	215/45R19 / 225/45R18	5x114.3	67.1 mm	M12 x 1.5
1.3i · 1.3L, 13B-MSP, R, Petrol	7.5x19	8x18	ET47 / ET50	5.60 in	245/40R19 / 225/45R18	5x114.3	67.1 mm	M12 x 1.5
1.3i (ABA-SE3P) · 1.3L, R, Petrol	7x16	7.5x19	ET60 / ET35	5.86 in	215/65R16 / 205/40R19	5x114.3	67.1 mm	M12 x 1.5
1.3i (ABA-SE3P) · 1.3L, R, Petrol	7x17	7.5x19	ET60 / ET35	5.86 in	225/60R17 / 205/40R19	5x114.3	67.1 mm	M12 x 1.5
1.3i (ABA-SE3P) · 1.3L, R, Petrol	8.5x17	7.5x19	ET50 / ET35	6.22 in	225/45R17 / 205/40R19	5x114.3	67.1 mm	M12 x 1.5
1.3i (ABA-SE3P) · 1.3L, R, Petrol	7.5x17	7.5x19	ET50 / ET35	5.72 in	225/35R17 / 205/40R19	5x114.3	67.1 mm	M12 x 1.5
1.3i (ABA-SE3P) · 1.3L, R, Petrol	7.5x20	7.5x19	ET42 / ET35	5.40 in	225/40R20 / 205/40R19	5x114.3	67.1 mm	M12 x 1.5
1.3i (ABA-SE3P) · 1.3L, R, Petrol	9x17	7.5x19	ET60 / ET35	6.86 in	245/35R17 / 205/40R19	5x114.3	67.1 mm	M12 x 1.5
1.3i (ABA-SE3P) · 1.3L, R, Petrol	8.5x20	7.5x19	ET47 / ET35	6.10 in	225/40R20 / 205/40R19	5x114.3	67.1 mm	M12 x 1.5

See how a different wheel would sit See wheel backspacing

What happens if you change the offset?

Compare your own setup

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

OEM baseline

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Wheels and hardware for this vehicle

Lug hardware

Wheel locks

Real-World 2006 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 — 9 documented builds
19-inch — 4 documented builds
20-inch — 1 documented build

14 documented builds.

Diameter

Staggered · 18×8 ET35 / 18×9 ET35

Documented on a 2006 Mazda RX-8 build — observed custom fitment, not a universal fit guarantee.

Wheel: BBS LM

Front: 18×8 ET35
Rear: 18×9 ET35

Compared with OEM

Compared with the 17×7 ET60 OEM configuration. Calculated geometry only — not fit confirmation.

Outer edge 37.7 mm farther toward fender (more outward poke)
Inner edge 12.3 mm farther from suspension (more inner clearance)
Width +1" vs OEM
Diameter +1" vs OEM

View full build on Modified1

Staggered · 18×8 ET35 / Rear unknown

Documented on a 2006 Mazda RX-8 build — observed custom fitment, not a universal fit guarantee.

Wheel: Enkei RPM2

Front: 18×8 ET35 · 245/45R18
Rear: —

Compared with OEM

Compared with the 17×7 ET60 OEM configuration. Calculated geometry only — not fit confirmation.

Outer edge 37.7 mm farther toward fender (more outward poke)
Inner edge 12.3 mm farther from suspension (more inner clearance)
Width +1" vs OEM
Diameter +1" vs OEM

View full build on Modified1

Staggered · 19×8 ET42 / Rear unknown

Documented on a 2006 Mazda RX-8 build — observed custom fitment, not a universal fit guarantee.

Wheel: Axis Crux

Front: 19×8 ET42 · 235/35R19
Rear: —

Compared with OEM

Compared with the 19×7.5 ET40 OEM configuration. Calculated geometry only — not fit confirmation.

Outer edge 4.3 mm farther toward fender (more outward poke)
Inner edge 8.3 mm closer to suspension (less inner clearance)
Width +0.5" vs OEM

View full build on Modified1

Staggered · 18×8.5 / Rear unknown

Documented on a 2006 Mazda RX-8 build — observed custom fitment, not a universal fit guarantee.

Wheel: Advan Racing RS

Front: 18×8.5 · 245/40R18
Rear: —

Compared with OEM

Compared with the 17×7 ET60 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 2006 Mazda RX-8 build — observed custom fitment, not a universal fit guarantee.

Wheel: RH J8 pro

Front: 19×8.5
Rear: 19×10

Compared with OEM

Compared with the 19×7.5 ET40 OEM configuration. Calculated geometry only — not fit confirmation.

View full build on Modified1

Staggered · 18×8 / 18×9

Documented on a 2006 Mazda RX-8 build — observed custom fitment, not a universal fit guarantee.

Wheel: Kahn

Front: 18×8
Rear: 18×9

Compared with OEM

Compared with the 17×7 ET60 OEM configuration. Calculated geometry only — not fit confirmation.

Diameter +1" vs OEM

View full build on Modified1

Staggered · 19×? / Rear unknown

Documented on a 2006 Mazda RX-8 build — observed custom fitment, not a universal fit guarantee.

Wheel: Enkei RPF-1

Front: 19×?
Rear: —

Compared with OEM

Compared with the 19×7.5 ET40 OEM configuration. Calculated geometry only — not fit confirmation.

View full build on Modified1

Staggered · 18×8 / Rear unknown

Documented on a 2006 Mazda RX-8 build — observed custom fitment, not a universal fit guarantee.

Wheel: SSR GT2

Front: 18×8
Rear: —

Compared with OEM

Compared with the 17×7 ET60 OEM configuration. Calculated geometry only — not fit confirmation.

Diameter +1" vs OEM

View full build on Modified1

Staggered · 18×7.5 / 18×8.5

Documented on a 2006 Mazda RX-8 build — observed custom fitment, not a universal fit guarantee.

Wheel: Driftz

Front: 18×7.5
Rear: 18×8.5

Compared with OEM

Compared with the 17×7 ET60 OEM configuration. Calculated geometry only — not fit confirmation.

Diameter +1" vs OEM

View full build on Modified1

Staggered · 18×? / Rear unknown

Documented on a 2006 Mazda RX-8 build — observed custom fitment, not a universal fit guarantee.

Wheel: DIP

Front: 18×? · 245/40R18
Rear: —

Compared with OEM

Compared with the 17×7 ET60 OEM configuration. Calculated geometry only — not fit confirmation.

Diameter +1" vs OEM

View full build on Modified1

Staggered · 18×7.5 / Rear unknown

Documented on a 2006 Mazda RX-8 build — observed custom fitment, not a universal fit guarantee.

Wheel: Enkei MM2

Front: 18×7.5
Rear: —

Compared with OEM

Compared with the 17×7 ET60 OEM configuration. Calculated geometry only — not fit confirmation.

Diameter +1" vs OEM

View full build on Modified1

Staggered · 19×? / Rear unknown

Documented on a 2006 Mazda RX-8 build — observed custom fitment, not a universal fit guarantee.

Wheel: Ruff Racing 277

Front: 19×?
Rear: —

Compared with OEM

Compared with the 19×7.5 ET40 OEM configuration. Calculated geometry only — not fit confirmation.

View full build on Modified1

More specs for the 2006 Mazda RX-8

OEM offsets are catalog configurations, not an aftermarket “safe ET range.” Matching offset alone does not confirm clearance. Documented custom builds are observed setups only.