going lower that et38 on 8j will need 215/35/40 IMO
as I said before, on et35 on 225/40/18 8j even with arch mod, caused me no end of trouble when on fk coilovers. Looks great and no probs since changing the tyres, my coilovers r as low as I can go, and the ride is nowhere near as bad as I thought it would be.