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edscoble
My Ultradynamico Mars JFFs (27.5 x 2.3, super-knobby) feel way faster than the GravelKing SKs (27.5 x 2.1, semi-knobby) that I had on my Ritchey before. Both ran tubeless with the same sealant. I initially viewed UD as hypebeast nonsense, but they've proved to be genuinely good (but expensive) tyres.