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From memory the Group A regulations were standard diameter, so 17" as per R32GTR N1 specs. The width was determined by engine capacity, so 2.6 x 1.7 = 4.42 litres, ie; under 4.5 litres, which I think was 8". The Sierras, being 2 litres x 1.7 = 3.4 litre were alos 8", like the R30/31's. The M3's, being under 2.5 litres, were 7" and the Corollas, under 1600 were 6".

Testing the memory, but 6", 7" and 8" sounds about right.

Cheers

Gary

Thanks for that reply but like 'Duncan' i'm amazed at how narrow that is (i always thought that they were 17'' so that's good to know). I have seen many vids showing the R32's under race conditions and the wheels look absolutely huge (width wise), There's one shot where the Calsonic R32 cuts the corner too much and both it's wheels lift on this vid http://uk.youtube.com/watch?v=9TT9GpQXug8 (nice vid this!) don't know if i'm looking right but they look more like 255+, any opinions??

8"....205s? jesus that is small

makes their lap times even more impressive

Good info, it would be great if you could turn up the exact width they ran :(

According to the the old publicity handouts the wheels/tyres were as follows:

Rims: 18' (Group A were allowed 2" up on standard)

Tyres: 265-680 x 18 Yokohamas, obviously.

It doesn't give a rim width unfortunately but I think I can find it.

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