OK, says I, and pumped them up to the 85 max PSI listed on the sidewalls. 50 miles later (my second ride) I had a *catastrophic* blowout when starting up and crossing an intersection. Sounded either like a backfire, or a rifle shot, as the tube came up between the rim and the tire bead.
Yes. This commonly occurs due to improper installation. Not a tire problem though.
Just checked...My Conti Travel Contacts are rated to 80 psi.