1992 Mazda RX-7 Wheel Offset

Quick specs

Wheel size: Multiple — see configurations
Offset: ET40 · ET50 · ET45
Backspacing: Multiple — see configurations
Bolt pattern: 5x114.3
Center bore: 67.1 mm · 59.6 mm
Thread: M12 x 1.5
Tire size: Multiple — see configurations

OEM configurations

Configuration	Front	Rear	Offset	Backspacing	Tire	Bolt pattern	Center bore	Thread
1.3 · 1.3L, 13B, R, Petrol	6x15	6.5x16	ET40	4.57 in	205/60R15 / 205/55R16	5x114.3	59.6 mm	M12 x 1.5
1.3 · 1.3L, 13B, R, Petrol	6.5x15	6.5x16	ET40	4.82 in	205/60R15 / 205/55R16	5x114.3	59.6 mm	M12 x 1.5
1.3 · 1.3L, 13B, R, Petrol	6.5x16	6.5x16	ET40	4.82 in	205/55R16	5x114.3	59.6 mm	M12 x 1.5
1.3 Turbo · 13B, R, Petrol	7x16	7x16	ET40	5.07 in	205/55R16	5x114.3	67.1 mm	M12 x 1.5
1.3 Turbo (E-FC3S) · 1.3L, 13B, R, Petrol	6x15	7x16	ET40	4.57 in	205/60R15 / 205/55R16	5x114.3	59.6 mm	M12 x 1.5
1.3 Turbo (E-FC3S) · 1.3L, 13B, R, Petrol	6.5x15	7x16	ET40	4.82 in	205/60R15 / 205/55R16	5x114.3	59.6 mm	M12 x 1.5
1.3 Turbo (E-FC3S) · 1.3L, 13B, R, Petrol	7x16	7x16	ET40	5.07 in	205/55R16	5x114.3	59.6 mm	M12 x 1.5

Lug hardware

Real-World 1992 Mazda RX-7 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 — 3 documented builds

3 documented builds.

Staggered · 18×9.5 ET30 / 18×9.5 ET15

Documented on a 1992 Mazda RX-7 build — observed custom fitment, not a universal fit guarantee.

Wheel: ROTA GTR-D

Front: 18×9.5 ET30 · 235/40R18
Rear: 18×9.5 ET15

Compared with OEM

Compared with the 16×6.5 ET40 OEM configuration. Calculated geometry only — not fit confirmation.

Outer edge 48.1 mm farther toward fender (more outward poke)
Inner edge 28.1 mm closer to suspension (less inner clearance)
Width +3" vs OEM
Diameter +2" vs OEM

View full build on Modified1

Staggered · 18×10.5 ET28 / 18×10 ET11

Documented on a 1992 Mazda RX-7 build — observed custom fitment, not a universal fit guarantee.

Wheel: SSR Koenig

Front: 18×10.5 ET28
Rear: 18×10 ET11

Compared with OEM

Compared with the 16×6.5 ET40 OEM configuration. Calculated geometry only — not fit confirmation.

Outer edge 62.8 mm farther toward fender (more outward poke)
Inner edge 38.8 mm closer to suspension (less inner clearance)
Width +4" vs OEM
Diameter +2" vs OEM

View full build on Modified1

Staggered · 18×9.5 ET41 / 18×10.5 ET28

Documented on a 1992 Mazda RX-7 build — observed custom fitment, not a universal fit guarantee.

Wheel: SSR

Front: 18×9.5 ET41 · 225/40R18
Rear: 18×10.5 ET28 · 255/35R18

Compared with OEM

Compared with the 16×6.5 ET40 OEM configuration. Calculated geometry only — not fit confirmation.

Outer edge 37.1 mm farther toward fender (more outward poke)
Inner edge 39.1 mm closer to suspension (less inner clearance)
Width +3" vs OEM
Diameter +2" vs OEM

View full build on Modified1

More specs for the 1992 Mazda RX-7

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.