I have a widearch M3 replica and recently fitted some 20mm wheel hub spacers (the type you bolt to the hub and then the wheel bolts to them)
Anyway I have dropped the car and surprise surprise my 9J back wheels have decided that they want to touch my rear arches.
Now the tyres on there are already stretched which has meant that they are a lot better than they would be with normal tyres fitted but they still catch ever so slightly.
I was just going to take a little bit of the metal away with a grinder and then waxoyl the hell out of the arch so that its protected but didnt know if there was an alternative method to the above.
I cannot roll my arches as the widearch kit is fibreglass and we all know what that means lol.
Here are a few pictures



