I replaced my spoke wheels with magnesium alloy wheels from China I got on ebay. That was more than two years ago and the causes of so many of my flat tires was pin-hole leaks from the spoke nuts even though I had rubber gaskets covering them. Since I changed to wheels with smooth interiors I have not had a flat tire even after putting more miles on my bike than I used to. This has been more than a luxury to have freedom from flat tires upsetting the apple cart in my life when I needed to get to appointments.