I'm getting multiple flats on my rear tire. They leak is where the stem meets the inner tube.
I suspect that the stem is being forced against the hole in the rim for the stem. This happens after about 10 - 20 miles of use, which is about a week's worth of riding for me.
The repair folks are coming up with a number of interesting reasons why this might be occurring; for example, that I have a thorn-resistant (and slimed) tube (something about its weight versus a regular tube), my weight, the fact that I have a milk crate that I carry stuff in, and that I don't fill my tires daily. I could believe any of these if I hadn't been riding for years with this bike with no problems until now. They recently replaced the tire, and that's when the problems started, so naturally, I suspect that it's the tire.
As I mentioned, the current working theory is that it's the heaviness of a thorn-resistant tube, so they put a regular tube on, and I'm trying that.
My question is this:
Has anybody had this experience, or are there experts out there who might know why a brand new tire would be the problem?
Any advice is appreciated!