Originally Posted by
merziac
Many bikes that came with them are outfitted for them, especially the brakes, there can be other things that are a PITA to change as well.
One of the "Paramount" tenants can be "do no harm", many of the bikes that are original with them and are still original this far down the line need to stay that way to preserve them.
Case in point. 1958 Paramount,
Original wheels, including hubs and spokes.
And another Paramount, 75-6?
Original wheels laced to old Phil Wood hubs, likely very early on as this was fairly common back in the day.

I stayed with 27 for similar reasons given its whole geometry was designed with them in mind. Figured I’d hate to switch to 700c only to realize it no longer looked or handled the way I liked.
Boy do I wish the Continental Grand Prix Classic came in a 27 though. Oh well. I think the Paselas I’ve ordered will do just fine, especially considering the rave reviews they get here.