ok, i'm posting this for a friend(who owns a 2004 c230 coupe)....he got a flat tire a couple nights ago and attempted to put the spare on but apparently he used the wrong lugs(he had me call the dealership, to which they told me they were too long). right after putting on the spare, he said it made a grinding noise and he had it towed to the service dept. i work on a lot of domestics(primarily corvettes)so he asked for my help but am not too familiar with MB cars....anyone have a link to where i should look for parts or a repair tutorial? any help is greatly appreciated, thanks