When you get a flat, make sure you check not only the tire for burrs, pokes, nails and bits of glass, but also the rim & rimtape for damage, holes and rough bits. I’m on my fourth tube since swapping my rear Kenda out for a road tire, 100% due to the fact that there’s a hole in the tape. Even the wrenches at the bike shop missed it. (It’s not a puncture issue from the end of a spoke — just as pressure point for the tube.) Wasn’t a problem at 80psi, but became one quickly at 120psi.