Currently I've got 20 on both (the yellow & black). Since I've used them only
for racing they have about 300 miles on them. I've had 1 flat & it was very
difficult tot change. So for Hawaii I decided to get a new tire in 23 for both
comfort & ease of changing a tire.
I haven't found too many places around either catalog or locally that sell the
23 size & the one or 2 places I have found have been pretty expensive. Can
anyone suggest a good price & place to get one from.