Originally Posted by
Leinster
This explains why GP5000s on Amazon are $10 more for a pair of 28s than 23s.
23s will be around a long time. Has anybody seen a pair of 20s anywhere any time recently, though?
You can see them on my track bike. They are Conti Supersonic 20's but they are so thin and fragile I won't even roll them on tarmac, I carry them into the Velodrome.