I have been considering switching to non-RFTs when I need to get some tires. Especially because of all the discussion of tramlining which I notice on certain parts of I-5. Last time I was at the BMW Parts Center at my dealer, I was talking to the guy behind the counter about tramlining, switching to non-RFTs and getting the Mobility Kit. He said that tramlining is NOT caused by the RFT tires but instead caused by sport tires. There are so many people on this forum that have been driving Z4s for years that swear it is the RFTs that cause tramlining and I tend to believe them over one person behind the parts counter. However, now he has me wondering...
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