I wanted to give a heads up about a pleasant tire repair I just had done at Tire Kingdom, which is a franchise and part of the TBC Corporation. The TBC Corporation also owns the Big O Tires, National Tire & Battery, and Merchant Tire chains.
I new I had a slow leak and stopped by over the weekend to see if Tire Kingdom worked on Teslas. First off I was told no, but the manager stepped in and stated they had received training on acoustical tires, further stating his issue was lifting it. I told him I had a set of lift pads, so he agreed. He quoted me $60 for a "difficult" repair, balancing and TPMS rebuild (valve stem and new nut). I thought it was a bit high, but the closest SC to me is almost an hour's drive, so I felt it was worth it, and I would now know that Tire Kingdom can and will work on my M3.
I took it in this morning. They were intimidated by using the key card, so they asked me to pull it in for them. They had a difficult time getting the lift arms under the car using my lift pads, but their technician figured it out in just a few minutes. I started walking out of the shop and the tech told me I could stay around as long as I didn't get in the way. Since I was a mechanic for many years I understand why they don't want you in their shop. It IS a liability issue.
Everything went smoothly from there. He found the nail and pulled it out. He then ran a small pointed grinder up through the nail hole which also went through the foam inside the tire marking the foam at the location of the puncture. He cut out just enough foam to allow him to patch the tire from the inside. To my surprise he used a patch that's also a plug with a pointed metal outer shield on the plug portion. As the patch/plug is pulled through the hole in the tire from the outside the metal shield pulls off leaving a plug that's part of the inner patch...very clever. I don't know if it's true, but he stated the patch/plug is now required by Michelin. He then glued the part of the foam previously removed back into place.
When I went to pay the bill it was $31.00.
images of the patch/plug: https://ibb.co/album/jc118v