After only a few run, my new F1 rear tyre - RIDE super soft (on F104), started to bulge (大肚) at high speed. I thought it was the inner foam. Although it can still run, and I ran another 5 - 6 packs with it.
Later, I decided to take it apart and have a look, surprise to find it was the inner skin (内皮) split at two places (see photo). It seems like a quality issue of RIDE.
I check my other new set, and there are 内皮 joints, where there could be weak spots.
I fixed it now with Lexan body repair glue, it seems to work ok.