Originally Posted by
neilfein
Yeah. As I said, it could be these tires that are at fault; I inflated them to 65 when I put them on, and they were unevenly inflated. After i took the PSI down to the mid 50's, they work fine. If, in a few days, they still bulge at 65, I'll send them back to performancebike for a new pair.
I had to take a stout scissors and trim about 1/16" off the rim strip on both sides.
There wasn't a problem with the old knobbies, since they fit much looser.
The Serfas I put on were "snugger" and the bead wanted to "drag" the rim strip along with it (in places) as it slid over while inflating. Originally, the rim strip was probably 1-2 MM too wide to seat down fully in the center depression of the rim.
A little liquid dish soap can help if the rim strip isn't the problem.