I just replaced the rear tire on my Trek 950. The new tire is a Kenda K850 wire bead (same as the old one was). It was difficult to get onto the rim (a Matrix 26" single-track), but with the right tools, I was able to do it. Today, I found that the inner tube had a leak, so I had to remove the tire and tube. I had a rough time of it, again using the steel tools (not the plastic ones). When I inserted the second pry tool under the bead, I could not slide it along to pop the bead over the rim. I finally got it to come off by using the handle of a standard slip-joint plier as the second tool.
I am wondering whether this is peculiar to wire bead tires. If so, my next one will surely be a folding bead. I don't think I need the extra strength the wire bead is supposed to provide - I am riding rail trails, not single-track.
Thanks for any help/suggestions.