Because my brother once said the RX-8 had less torque than a BMW 318i I compiled these specs. Ignore the commodores they're just a local (OZ) car. All torque figures are in N.m and are for the latest Australian model available.

The only exceptions are
1) The 540 - I used his 97 UK version's figures.
2) The M3 has E36 gear ratios, I'm not sure if they changed for E46

So here they are, just thought you guys would get a laugh:
RX8
1st = 3.760
diff = 4.444
Torque = 216
Peak RW Tractive effort: 3609N.m
tyres: 225/45/18
Peak pulling force = 5471N (@38km/h)

BMW
320
1st = 4.230
diff = 3.38
Torque = 210
Peak RW Tractive effort: 3002N.m
wheels = 205/55 - 16
Peak pulling force = 4751N (33km/h)

325
1st = 4.230
diff = 3.15:1
Torque = 245
Peak RW Tractive effort: 3264N.m
wheels = 205/55 - 16
Peak pulling force = 5165N (35km/h)

330
1st = 4.21
diff = 2.93
Torque = 300
Peak RW Tractive effort: 3701N.m
wheels = 205/50-17
Peak pulling force = 5812N (35km/h)

M3
1st = 4.23
dif = 3.23
Torque = 365
Peak RW Tractive effort: 4987
wheels = 245/40/17
Peak pulling force = 7953.9 (28.1km/h)

RX-7 (TT)
1st = 3.483
diff = 4.100
Torque = 314
Peak RW Tractive effort: 4484N.m
Tyres 225/50/16
peak pulling power = 7102N (42km/h)

540i/6
1st = 4.23
dif = 2.81
Torque = 440 @ 3600rpm
peak rw tractive effort = (tq * 1st * diff) = 5229.972 N
wheels = 255/40/17
peak pulling force = 8226N (36km/h)

Holden Commodore VY SS LS1
1st = 2.66
diff = 3.46
Torque = 465 @ 4400rpm
peak rw tractive effort = 4280N.m
Tyre size = 235/40/18
peak pulling force = 6634N (@58km/h)

Commodore V6 (Buick 3.8)
1st = 3.83
diff = 3.08
torque = 305@3600rpm
peak rw tractive effort = 3598N
tyres = 205/65/15
peak pulling force = 5557N (@37km/h)

JC Cosmo:
1st = 2.784
diff = 3.909
torque = 402 @ 3000
peak rw tractive effort = 4375N.m
tyres = 215/60/15
peak pulling force = 6847N (33km/h)

-pete

 

but, but, but.... what about vehicle masses????

hahaha... jk. good job.