So put on some tyres today and fitted them...
Hankook K107's . 255/35/18
and... NO RUBBING.
tyres stick out of the sides about 1/2 inch. They are just tucked in under the fenders, with some slightly aggresive camber. I dont dare go any lower tho... ok mayb a little bit.
anyway really happy, and now just to finish putting on all the other bits n shes nearly done!