[andrewzwj]

Hi guys, I am currently looking to upgrade my M550i to 668M wheels (currently with 19-inch 664M wheels), but I am not quite sure about which tires to choose.
The parts guy told me BMW offers three RFTs in 20inch size:

1. Bridgestone RE050A RFT
2. Pirelli P-zero R-F (Not sure if it is the newer PZ4)
3. Goodyear Eagle F1 Asymmetric ROF

I did some research, but basically all of them have mixed reviews. I know that some non-runflats do provide better performance and comfort, but I still want to keep using runlets just for that peace of mind.

So can someone give me some advice regarding these tires?
Really appreciate it!