2010 Mazda RX-8 Wheel Offset

Quick specs

Wheel size: 7.5x16 · 7.5x17 · 8x18 · 8x19
Offset: ET50 · ET47 · ET45
Backspacing: 5.72 in · 5.97 in · 5.85 in · 5.77 in
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 (ABA-SE3P) · 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 (ABA-SE3P) · 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 (ABA-SE3P) · 1.3L, R, Petrol	8x19	8x18	ET47 / ET50	5.85 in	225/40R19 / 225/45R18	5x114.3	67.1 mm	M12 x 1.5

Wheels and hardware

Lug hardware

Wheel locks

Real-World 2010 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 — 7 documented builds
19-inch — 3 documented builds
20-inch — 1 documented build

12 documented builds.

DiameterLayoutSuspension

Staggered · 18×9.5 ET15 / Rear unknown

Documented on a 2010 Mazda RX-8 build — observed custom fitment, not a universal fit guarantee.

Wheel: Work Meister S1R

Front: 18×9.5 ET15 · 225/45R18
Rear: —

Compared with OEM

Compared with the 17×7.5 ET50 OEM configuration. Calculated geometry only — not fit confirmation.

Outer edge 60.4 mm farther toward fender (more outward poke)
Inner edge 9.6 mm farther from suspension (more inner clearance)
Width +2" vs OEM
Diameter +1" vs OEM

View full build on Modified1

Staggered · 19×9.5 ET20 / 19×11 ET27

Documented on a 2010 Mazda RX-8 build — observed custom fitment, not a universal fit guarantee.

Front: 19×9.5 ET20 · 225/40R19
Rear: 19×11 ET27 · 265/35R19

Compared with OEM

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

Outer edge 46 mm farther toward fender (more outward poke)
Inner edge 8 mm farther from suspension (more inner clearance)
Width +1.5" vs OEM

View full build on Modified1

Staggered · 18×10 ET0 / 18×12 ET-15

Documented on a 2010 Mazda RX-8 build — observed custom fitment, not a universal fit guarantee.

Front: 18×10 ET0 · 225/40R18
Rear: 18×12 ET-15

Compared with OEM

Compared with the 17×7.5 ET50 OEM configuration. Calculated geometry only — not fit confirmation.

Outer edge 81.8 mm farther toward fender (more outward poke)
Inner edge 18.3 mm farther from suspension (more inner clearance)
Width +2.5" vs OEM
Diameter +1" vs OEM

View full build on Modified1

18×9 ET45

Documented on a 2010 Mazda RX-8 build — observed custom fitment, not a universal fit guarantee.

Tires: 255/40R18

Compared with OEM

Compared with the 17×7.5 ET50 OEM configuration. Calculated geometry only — not fit confirmation.

Outer edge 24 mm farther toward fender (more outward poke)
Inner edge 14.1 mm closer to suspension (less inner clearance)
Width +1.5" vs OEM
Diameter +1" vs OEM

View full build on Modified1

18×9.5 ET35

Documented on a 2010 Mazda RX-8 build — observed custom fitment, not a universal fit guarantee.

Compared with OEM

Compared with the 17×7.5 ET50 OEM configuration. Calculated geometry only — not fit confirmation.

Outer edge 40.4 mm farther toward fender (more outward poke)
Inner edge 10.4 mm closer to suspension (less inner clearance)
Width +2" vs OEM
Diameter +1" vs OEM

View full build on Modified1

18×9.5 ET27

Documented on a 2010 Mazda RX-8 build — observed custom fitment, not a universal fit guarantee.

Tires: 245/40R18

Suspension: Lowered on Springs

Compared with OEM

Compared with the 17×7.5 ET50 OEM configuration. Calculated geometry only — not fit confirmation.

Outer edge 48.4 mm farther toward fender (more outward poke)
Inner edge 2.4 mm closer to suspension (less inner clearance)
Width +2" vs OEM
Diameter +1" vs OEM

View full build on Modified1

19×9 ET40

Documented on a 2010 Mazda RX-8 build — observed custom fitment, not a universal fit guarantee.

Tires: 275/30R19

Compared with OEM

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

Outer edge 19.7 mm farther toward fender (more outward poke)
Inner edge 5.7 mm closer to suspension (less inner clearance)
Width +1" vs OEM

View full build on Modified1

Staggered · 18×9.5 ET22 / 18×10.5 ET22

Documented on a 2010 Mazda RX-8 build — observed custom fitment, not a universal fit guarantee.

Front: 18×9.5 ET22 · 255/35R18
Rear: 18×10.5 ET22 · 275/35R18

Suspension: Leveling Kit

Compared with OEM

Compared with the 17×7.5 ET50 OEM configuration. Calculated geometry only — not fit confirmation.

Outer edge 53.4 mm farther toward fender (more outward poke)
Inner edge 2.6 mm farther from suspension (more inner clearance)
Width +2" vs OEM
Diameter +1" vs OEM

View full build on Modified1

19×9.5 ET35

Documented on a 2010 Mazda RX-8 build — observed custom fitment, not a universal fit guarantee.

Tires: 255/35R19

Suspension: Lowered on Springs

Compared with OEM

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

Outer edge 31 mm farther toward fender (more outward poke)
Inner edge 7 mm closer to suspension (less inner clearance)
Width +1.5" vs OEM

View full build on Modified1

Staggered · 20×8.5 / 20×10.5

Documented on a 2010 Mazda RX-8 build — observed custom fitment, not a universal fit guarantee.

Wheel: Rennen C10

Front: 20×8.5 · 235/30R20
Rear: 20×10.5 · 255/30R20

Compared with OEM

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

Diameter +1" vs OEM

View full build on Modified1

18×8.5

Documented on a 2010 Mazda RX-8 build — observed custom fitment, not a universal fit guarantee.

Tires: 245/40R18

Compared with OEM

Compared with the 17×7.5 ET50 OEM configuration. Calculated geometry only — not fit confirmation.

Diameter +1" vs OEM

View full build on Modified1

Custom wheel setup

Documented on a 2010 Mazda RX-8 build — observed custom fitment, not a universal fit guarantee.

Wheel: R3

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.

18×9.54 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 2010 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.