So I've have 2 separate sets of rims (steel rim, 90's era mountain bike), and for the life of me I've never been able to get them mounted 100% even. I can spend 10 minutes trying to get them even, but pushing and pulling, I always seem to end up with a low spot.
Last year I thought it was the rims, but I have a replacement pair this year with the same problem.
It doesn't seem to matter much in the winter, since my speed is low and I rolled with them that way all last year without issues.
Has anyone else had that problem? It almost seems like the bead diameter isn't quite large enough for the wheel. I inflated them to 80 PSI (max of 45) to see if the bead would set all the way around. I put on soapy water. I didn't have any talcum powder to try.