I have been getting flats every 20-30 miles for the last 2 months. This has caused serious inconvenience to me, as bicycle is my preferred mode of transport to work and class. Details of the situation:
Hybrid bicycle (Specialized Globe 2007 -- 5,000 miles ballpark on it)
Only rear wheel is flatting
Rear wheel is 622x19C rim
Tire is 700x35, Kenda 700 35-42 inner tube
I just replaced the whole rim and spokes, for $60 (I had a lot of broken spokes and the rim was out of alignment badly). However the flats keep coming.
Tire pressure suggested on the rear wheel is 30-60 PSI
I run the pressure between 50-60 PSI
I weigh 212lbs. and I carry up to 30 extra pounds of load (backpack etc.)
The holes in the inner tube are usually single tiny punctures.
I never find anything in the tire like glass or anything
The tire seems to have been worn very quickly (it seems kind of like a cheap tire).
Is the tire a possible cause, or is it possible that some misalignment in the hub (Shimano attached to an 8 speed cassette) is just messing things up?
This is driving me crazy... maybe I should buy a new tire and run the pressure much higher?
Run the pressure lower? buy some specialized kind of inner tube?
I would really do anything to avoid having to patch flats every other day!
**** THANKS EVERYBODY, I BOUGHT AN ARMADILLO FROM SPECIALIZED... NO FLATS IN 2 WEEKS **** I think the pressure was way too low on the piece of crap tire i had before ... armadillo is solid!!