I was worried about the sidewalls on the 4000s
Same. Which is why I'm not using them.
The 4Seasons aren't much better. 0.2mm thinner tread than 4000S and 0.15mm thicker sidewall.
@hippy started
London Fixed Gear and Single-Speed is a community of fixed gear and single-speed cyclists.
hippy
I was worried about the sidewalls on the 4000s