Originally Posted by
mcnuggets
I have a IRO Mark V frame with Paul Component 32h track hubs laced to Velocity Deep V rims. I am using 700x28c Bontrager Race Lite Hardcase tires with 700x21-28c long-stemmed Specialized tubes. I am going out after work to buy what is my third tube for my rear in under 20 miles of riding. Front tire is fine. Each time I filled the rear tire the night before and went riding the next afternoon. Pressure didn't seem to noticably diminish overnight and only when I rode 3-4 miles did the pressure drop off. What am I doing wrong here?
Are they puncture flats or pinch flats? If they're puncture flats it's bad luck. If they're pinch flats, my guess is that the tires are underinflated, even if your pump says otherwise. Maybe borrow a friend's pump or cheat a bit more air in there.