I've been biking to work as much as I can for about 4 months or so. It's been great, for the most part. The ride is only 3 miles--downhill on the way to work, and sadly uphill on the way home.
I have your standard road bike. When I first got the bike, there were defects in the tubes that caused them to go completely flat with minimal use. The bike shop that sold me the bike replaced the tubes for free. However, in the past couple of weeks I've had to replace the tube on my back wheel twice. The first was your standard $5 tube. The next was a tube that contained that gel that supposedly stopped small leaks (yeah, so much for that).
I don't believe I'm over- or under-inflating the tube. I'm following the manufacturer's recommended psi. The problem I believe I'm having is the terrible, horrible, awful road conditions. Broken beer bottles, lots of gravel and rocks, uneven surfaces. I even found a big box of spilled nails strewn all over the ground. Needless to say, maintenance of public thoroughfares in my city is abysmal.
Does anybody have any recommendations for sturdier tubes or liners or something that would help out?