Challenge is quoted as 60g heavier. Makes me think it's not the same. Might both be made by Lion tyres though. Rich had one on his disc for the National 10 last year because it's a bit tougher than a Record/VitCrono.
I now have 5 Vittoria Cronos maturing in the loft :)
anyone compared Challenge Cronos to Vitorria Cronos - tubs?
Basically look like the same tyre - are they manufactured together?