I use 265/35/18 & 255/35/18 R888s or Dunlop D02Gs on my 600 bhp Evo for near year round use. 40 profile 255 tyres must look a little, erm, chunky on the side wall?
I value grip over all other factors though, and the Dunlops in particular are quite pricey. North of £800 for a set IIRC.
They also won't be the best tyres in Winter weather, for fuel economy, for low noise or value
Depends on what you want to do with it, and for what type of road conditions.