Just to help a bit more maybe...
I have 18x9.5 -14 (FF, high disc) with RB 30mm fenders running 215.40 and at a guess -3 or -4 camber. That has plenty of room still.
Rears are 19x10.5 -26 (FR, lo disc) again with 30mm RB overs. I havent finalized the tyres yet but they just sit in there with a 235.35 and arms set to stock length. I do intend to pinch the overs to make them bigger to loose some camber.
With 50mm rears you'd be laughing with my spec's.
Hope this is usefull to you.
