When people say AD08's run wide, they should really be saying they run VERY wide. I planned on running a 255 AD08 in the front since i currently use a 255 Star Spec in the front until i compared the size.
Heres a picture of a 255/35/18 Dunlop Z1 Star Spec, mounted and inflated, next to my 255/35/18 AD08. Star Specs are already considered pretty wide and square, but the AD08 is considerably wider. Its about as wide as my 265 t1r.