Does anyone know if replica wheels are more subjective to corrosion, buckling, and/or weigh more than geniune audi ones? (or any other problems with replicas?). Also, I'm interested in the mtm alloys, and was wondering if anyone knows of a place that does replicas of those (in 18 inch)? I've seen Leigh Tyres mentioned around the place, but he doesn't seem to do mtm replicas. Cheers.