I use Primo Comets on my folder... performance is off the hook but any 20 inch tyre will wear faster and these are not a high mileage tyre in any version and the 26's will give you great performance at the cost of longevity and they are not very puncture resistant. Have flatted once with mine over 4000 km when I picked up a few strands of radial tyre wires so all in all I have to be pretty happy.