My 85D, 4 wheel drive, 42000km. Changed to winter tires and saw some strange wear trace on all four winter tires on the same place (Pirelli 1245/45 R19). I have changed tires front to back, so if this is caused by something on the car touching the rubber it might be so, or as they said at the Tesla shop in Drammen that "this mark is common for Pirelli". This is probably no big safety issue, but "something has happened" and it would be interesting to know if someone else out there has seen something like it .....
