Wheel Size, Offset and Stance Guide!

What is a good wheel and tyre combo and offset for an RX7?

Everyone has different opinions on stance and offset.  For looks, my feeling is to get the wheels perfectly flush with the fenders. I also like a thinner tyre profile and a tiny bit of strtch, but thats just personal preference. It is by no means optimal for fastest lap times.

Mazda OEM

Mazda FD3s P.C.D is 5Hx114.3
Wheel nuts are M12x1.5
Ceter bore for fitment is 67mm diameter.

Mazda 1991 Enfini E-FD3s was fitted with the same side all round.
F&R: 16 x 8.0JJ +50.

BBS Japan Mazda OEM Efini RZ
F: 17 x 8.0JJ +50
R: 17 x 8.5JJ +50　

The 1999 Mazda Rx-7 GF-FD3s was fitted with a few different combinations.
RB wheels were the same front and rear and also featured on the 2001 RBR

F&R: 16 x 8.0JJ +50

Type R and RS wire different front and rear.
F: 17 x 8.0J +50
R: 17 x 8.5J +50

BBS Japan Mazda OEM 2000 Wheels
F: 17 x 8.0JJ +50 235/45ZR17
R: 17 x 8.5JJ +50 255/40ZR17
(Gun Metallic) were fitted to RZ
(Silver) were fitted to the RS model.

BBS Japan Mazda OEM Spirit R Wheels
F: 17 x 8.0JJ +50 235/45ZR17
R: 17 x 8.5JJ +50 255/40ZR17
(Silver) or (Gun Metallic)
Centre is different to RZ wheels.

After Market

Recommended offset differs for many Japanese wheel manufacturers and many depend on the actual wheel and offsets available from that manufacturer. Weds has a good variety and one of the few to still list the FD3s. It is out of production you know.

Tyre sizes also depend on usage, looks and individual manufacturers specs.

Ceter bore for fitment is 67mm diameter and many aftermarket wheels are 73mm diameter. Its a good idea to get some hub centric rings for any aftermarket wheels.

Width and offset recommendations are the same for all wheels diameters but basically the tyre dimensions will force a small change in offset and width from manufacturers.

17" Sizing.
F: 17 x 8.0 +38~42 235/45/17
R: 17 x 9.0 +35~42 255/40/17

18" Sizing.

F: 18 x 8.5 +38~42  225/35/18 ~ 235/35/18

R: 18 x 9.5 +38~42  255/35/18 ~ 265/35/18

17" Example on Stock Body.
F: 17 x 9.5 +28 255/40/17 Knight Sports Demo car.

R: 17 x 9.5 +28 255/40/17

18" Stance example - Stock Body (fender roll required).

F: 18 x 9.0J +29 225/40/18

R: 18 x 10.0J +37 235/40/18

18" Stance example - Stock Body (big fender roll required).

F: 18 x 10.0J +38 255/35/18
R: 18 x 10.0J +18 255/35/18

19" Stance  - Stock Body (fender roll required).

F: 19  x  9.0+22  225/35/19

R: 19 x 10.0+25  245/35/19


Blue C-West Advan Demo Car (aggressive fender roll)
Advan RS-D & Neova
F: 19 x 9.0+25 +3mm spacer 225/35/19
R: 19 x 10.0+25 +3mm spacer 265/35/19

Chester!

Version 1

F: 19x9.0 +24 235/35/19

R: 19x10.0 +11 265/30/19

Version II pictured
F: 19 x 9.5
R: 19x 11.0 Rear Fender +10mm Rolled

19x10.5 All around +12 from memory

F 225/35/19
R: 245/35/19

Fujita's Feed +25mm wide body recommendation.

Normal Wheel offset is 9.5J +35 (no modification to inners)
Demo cars have fender processing.
F: 18 x 9.5 +22~24
R: 18 x 9.5 +22~24 w +30mm spacer
255/35/18 all round

Owner Example.
F: 17 x 9.0 +22
R: 17 x 9.5 +12 no spacer
F&R 255/40/17

RE-Amemiya
Touge Monster with some guard Rolling
Enkei RP03 and Neova

2005 Option Magazine Car of the Year.

F:  17 x 8.5J +40 235/45/17

R: 17 x 9.5J +38 255/40/17

However RE-Amemiya lists the sizes as 

F:  17 x 9.5J +?? 255/40/17
R: 17 x 10.0J +?? 255/40/17




AD GT Kit variations.

Strikers FD3s Yellow/Black
Enkei GT-C01 & Toyo Proxes
F&R: 18 x 9.5J +38 255/40/18


Revolution TA-1 Street Demo Car
RE-Amemiya AD GT Kit with higher ride height.
Rays Volk RE-30 & Proxes R1R
F: 18 x 9.0 +35
R: 18 x 9.0 +35 +25mm spacer
F&R 265/35/18


Super Greddy 2
(AD GT Kit Type 2)
Enkei GT-C01 & Neova
F: 17 x 9.0J +18 235/45/17
R: 17 x10.0J +22 255/40/17

D1 Spec (Super Greddy 2) +
Enkei GT-C01 & Toyo Proxes
F: 18 x 9.0J +18 245/40/18
F: 18 x 10.0J +22 265/35/18

Super Greddy 3 #1 and #2
Enkei GT-C01 & Neova

F: 17 x 9.0J +40 255/40/17
R: 17 x9.5J +38 255/40/17

Super Greddy 3 #3 Green
Enkei GT-C01 & Neova

F&R: 18 x 9.5J +38 255/40/17 Rear spacer.

SGT Replica
Enkei GT-C01 & Neova
F&R: 18 x 9.5J +?? 255/35/18
F&R: 18 x10.5J +?? 265/35/18

Genki 7

Enkei GT-C01 & Neova

F: 19x9.5 +22  245/35/19

F: 19x10.0 +22  275/35/19

AC037 ＡＺ’ＭＡＸ号

 RAYS TE37 18 x 9.5J

F: 255/35R18

R: 265/35R18

RE-Amemiya +20mm AD-GT Widebody Owner example
F: 18 x 9.0 +22 235/45/17
R: 18 x 9.5 +18 255/40/17

RE-Amemiya SGT Replica
F&R 18"x10.5 +15  265/35/18

All you need to do is find wheels as close as you can to these.
If you can't get exactly what you need, then customise to make them fit.
Rolling, removing inners, flaring the fenders, whatever it takes.

20" will fit. But I am not going to list any. I personally don't recommend it unless you have a Feed Afflux V.

Semi Slick/S-tyres/R-Comp or whatever you call them have thicker tread and larger sidewalls for similar sizing. Go one size narrower for a better fit.

Weight and strength.
The cast vs forged wheel debate is always on. I have had both. Forged and Cast. It totally depends on your preference and setup. but I'd recommend forged wheels for lighter weight and strength but remember there are some really fast cars out there lapping tracks on cast rims and drifting with the best on heavy chrome 2 piece rims.

R Magic Pink 4

& TE37 SL

18x11.0 +18

Previous Spec
RAYS CE28N
F: 17 x 9.5J +35 255/40R17
R: 17 x 9.5J +15 255/40R17
ADVAN A048M

R Magic RE Quarter Panels.
F+25 R +30 wide body

Recommended 9.5J & 255 or normal wheel and +15~25mm Spacer
F&R: 17x9.5J +15 255/40/17

R-Magic Pink 6 D1
RAYS gram LIGHTS 57D and Neova

F 17 x 9.0J ?? 235/40/17
R 18 x 9.5J  ?? 265/35/18

Previous Spec
CE28N and Neova
10.5J×18 +35 Custom offset 265/35R18

10.5J×18 +18 +20mm Spacer 265/35R18

Confused! I am.

Russ.

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