Originally Posted by
Pop N Wood
I actually had a defective tube the other day. Bought the bike a year ago, changed out a flat and the pinhole was on the rim side right in the middle of a freckle sized thin spot in the rubber. kenda tube I believe.
Freckled-sized thin spot in an older tube on rim side, with pinhole puncture: not likely a defective tube. I'd look at/replace the rim strip.