Rosemary, WOW. I am surprised
Rosemary, WOW. I am surprised that you either kept the car or did not change to NON run flat tires after going through only 5 tires. Something is definitely wrong. Has anyone come close to working out why you have this problem. I must admit though that I had a bigger choke when I saw the cost of your 650i. A new 650i coupe here in Melbourne, Australia has a drive away price of US$232,755 whereas a 2012 650i can be bought for US$156,00. I hope the cost of tires in NY is in proportion to the cost out here. Mine cost approx US$470 per tire fitted. Good luck.