I switched over to 700x28C tire a few weeks ago. Im on my second flat already, but both times the hole where the leak starts was around the valve stem. I made sure to put the tube/tire on properly after looking up the method on a website. I dont understand why it tears near the valve. The sidewall states 120PSI max, so i put anywhere from 115-120 PSI(going by the gauge on the pump, topeak Joeblow sport)
the tubes are bontrager 700x28-32c -1/8-1/4
the wheel is a Bontrager camino 622-32 wheel
this last flat happned over night, i rode yesterday morning several miles, came home and today the tire was flat when i went to go ride...
is it getting pinched? should i not inflate so high, do i need a different wheel?