edit: The previous owner has informed me that the grooves were caused by pebbles getting jammed between the caliper and the barrel NOT the brakes themselves!
I have a set of Advan TCIIIs (18x10.5 +25) that belonged to another member who had 380mm Brembos all around. Three wheels have shallow grooves from the brakes (the bolts on the calipers I guess) rubbing the barrels. Presumably during heavy use when everything has expanded. Not sure what category they belong in considering that.
2008 IB E92 M3| BBS | KW | Arkym | Platte Forme A.G. | Active Autowerke | K&N | Fabspeed | Dinan | Evolve-R
Last edited by M3PO; 01-07-2013 at 08:18 PM.