Originally Posted by
TexLex100
it is hard to tell what caused it since I checkd the tire pressure before leaving home. It must have been a sharp. also, i carry a pump and I inflated the tire after I discovered the flat, but that was good for hald a minute then flat again. I will see if I can Replace the tire myself in the ccomfort of home, and if my back doesn't act up too much (since I have had multiple back surgeries, any bending of weird moves would trigger a back episode). Alternatively! I can just take the bike to a nearby LBS and have him fix it. Maybe I will also change to a narrower tire while I am there :-)
It's good to find out the cause -- even if you have the LBS change it.
If it was a puncture, you could look at the tires for wear and puncture protection. Some tires come with puncture protection such as Kevlar or Aramid belts. Or you can use tire liners. In any case, whatever punctured the tube may still be in the tire waiting to stick another tube.
If it was a pinch flat, consider increasing your tire pressure.
If the puncture came from inside it may be from a spoke or bad rim strip.
Otherwise, just blame the gremlins and keep riding.
But, I really try to avoid flats as I do not relish the consequences of mechanical failure in the rain and cold when I'm 10 or 15 miles from my car.