I've got part of a part number...all that's still there is "6000...", the rest is gone because I had to do the last mile or so to get home in order to get it off safely, so it's dragged on the tyre and worn through. I drove home as slowly as I could down the dual carriageway, but I'd just been doing 70 for the 15 minutes before it came off, so the tyres were probably lovely and warm and just burned through with heat and friction.