Just moved up from 1.5" Serfas Drifters on my 26" mountain bike tourer to 2". Pressure rating is 40-65 psi.
Playing around with different pressures has been interesting. At anything above 45 pounds it feels like riding on two red rubber bouncing balls! going down a dirt road feels skittery and as though I might lose it when the tire hits a stone and bounces a bit. The remarkable thing is that I am 215 pounds and still feel bouncy down to 30 pounds pressure( Took them down to that in the snow and ice we just had).
On pavement, at 65 pounds, they feel amazingly fast, but I will want to do some fire roads along with pavement routes while touring. SO, while I figured I could just let air out then pump it back in, I have discovered the joys of bringing that much volume of tire back up to even 50 pounds. Its a lot of pumps even with a big floor pump! My mountain morph would get some serious workouts.
Does anyone think that the Serfas drifters are not suited to touring? I put 1500 miles on the 1.5" drifters before a brake pad got skewed and took one out, it had a lot of miles left in it otherwise.
Does anyone adjust tire pressure according to conditions with a larger tire?
I did have some Schwalbs at one time, and they did not feel so loose, but then they did not feel all that great on the road either, sort of dead. The Serfas does feel less plodding.