Tire sizing. I’ve got a Dahon Vigor D9. Currently has some fairly aggressive knobbies on it. Tires now are 54-406’s. (20x1.95) From what I understand I can go down in sizing (below 54) but not likely up in sizing due to rim width.

I’ll be using the bike exclusively for exercise and nearly always on paved paths. Occasionally I’ll ride some park paths that are fine gravel.

I’d like to get wider tires on these rims, at least a 2.0. I’m also looking for some recommendations on a fast, smooth tire for pavement. I’ll lose some traction on fine gravel but those are typically slower cruises with my wife.

Thanks in advance for any advice.

Merry Christmas!