Originally Posted by Cyclebum

Thanks BP.

The confusion is that in the world of cycling 20" don't necessarily mean 20". When tire choices are as limited as this, to me that means I got an odd sized wheel. My lbs sold me a tire labeled 20"(bmx?) but it was too small for my wheel. Gotta say 451 somewhere on it.

I did find a tire that fits at another shop and a 20" tube that really doesn't, but I stretched and squeezed 'til I got it all together and am able to ride. Will make another attempt next week to find the right tube, presta or schrader. I prefer schrader. As my lbs doesn't seem to appreciate the finer points of all this, will search the net.