I run 235/40 front and 265/35 rear Dunlop Starspecs with stock suspension and there is no rubbing anywhere. I autocross the car so if it rubbed I would know. Starspecs run pretty wide for street tires. Looking to add some camber in front and run wider later.
235/35 front would add some rake to the car. It's smaller so I don't see how it would rub if 235/40 does not.
Very happy with my set from the original group buy!
2009 BMW 135i 6MT Sport, AFE intake, Cobb AP, Apex 18x8.5+9.5, 255/275 PSS