As most of my bikes (now) are 27" my tires have been 1 1/8 (28) or 1 1/4 (32).

Going from 28 to 32 was a pretty big difference to me. That mitigated a lot of bumps to me.

A while ago I had a set of 1 3/8" (37). Riding those tires was like riding on a poofy cloud made out of cotton candy and Cottonelle toilet paper.

Since then I was searching for a set of non-knobby, decent quality 27x1 3/8" tires. I found them in the Loose Screws Swift Tire Sand Canyon. I'm reserving judgment on them until I get some decent miles in some different conditions with them. Right now, for the pavement I've ridden them on- there doesn't seem to be a whole lot of difference between the 1 1/4 and the 1 3/8, not like the old Specialized 1 3/8 tires and the modern Pasela 1 1/4. So I'm thinking there may be a big difference in either how tires were made 25 years ago and now, or the Sand Canyons are designed to be less supple than the Specialized Expedition OR the age of the tires made them more cushy.

I'm very happy to have found a 27" alternative or accessory to the Pasela.