who is he?

Definitely this is a +10 or something else. I have SSR MS3 and have a 9.5+12 in the front that sticked out past the fender. I had to roll and pull the fender to prevent rubbing and then gave it a negative 2 camber to look just flush. I'm also dropped on H&R springs which aggressively lowered the front.

http://www.the370z.com/nismo-370z/29...-pics-127.html

if you go through the last couple pages, you should find his name

-1 offset on 20x11 on a 305 tire will make you run at least -5 camber to fit , pretty sure he just posted wrong....

yeah, im -4 on a 12 inch wheel in the back running -4.75 camber and I HAVE to stretch a 275 tire to get it to fit.