What's the narrowest whitewall I can get? Link? Don't have enough room for a 2.125, and a 1.75 would be a squeeze. 26 wheel by the way. If I can't get a tire that will fit, I guess I'll have to hunt down another frame.

I've seen 26 x 1 3/8 whitewalls, but you'd need an that size wheel. Probably easier to paint up your own.

I actually have that size wheel, that's the original size tire for this bike.