After reading the F30 forums, consensus seems to rate the RFTs in this order:
1. Bridgestone Potenza S001 RFT
2. Pirelli Cinturato P7 Run Flat
3. Goodyear Efficient Grip RunOnFlat
I wouldn't be surprised if BMW has seen the err of their ways (like with the paddle shift fiasco) and have stopped putting Goodyear's on M Sports, making the Pirellis the default M Sport summer tire. Perhaps we'll even see the Bridgestones soon since they are offered on F30 M Sports.
Hopefully, Tire Rack performs another road test that includes the newer Bridgestones and Goodyears. I have a feeling that Michelin is still king of the hill.
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