I ran my car on RFT for 3 weeks, then changed to regular tires. (19")
Its night and day, the RFT ruins the ride, stability, cornering, wet performance, noise, comfort, turn in precission, feel, everything is terrible with RFT.
But then again Im not goin for second best.
I advice everyone strongly to throw the RFTs and get real tires.
PS. Theres a good reason why no M car has RFT!