RFT vs Non-RFT是个争论很多的话题.早期的RFT确实有乘坐不舒适的问题.近年的好多了.Tirerack的这文章还算客
http://blog.tirerack.com/blog/make-driving-fun/ditching-your-run-flat-tires-for-non-run-flat-tires-on-your-bmw-read-this-first-v1
http://blog.tirerack.com/blog/make-driving-fun/ditching-your-run-flat-tires-for-non-run-flat-tires-on-your-bmw-read-this-first-v1