I have a R32 with an RB25 making 200 rwkw...I had bad traction too, I planned to get camber kits and pineaples and all that stuff to help! But when I changed from 18s with crap 265 wide tyres (Falken Ziex) to 17s that I had hanging around with decent 235 tyres I found traction improved! With 255s fitted of the same brand it should be better again! So yeah I agree ditch the 18s and spend more money on good tyres for 17 inch rims!!