Mark ChickDurableAce@vivaldi.net
Jun 20, 2026, 11:18 AMA4. No experience, but road.cc says this, and mentions some alternatives:
https://road.cc/content/review/continental-pure-contact-tyre-311995
I've used two dedicated gravel tyres and would rate them both. I don't know if they're available in 650b. They're Michelin Power Gravel and Challenge Gravel Grinder (now renamed, I think). Probably a bit more gravel dedicated than the Pure Contact and equivalents.