Hi,

I recently purchased and went through the horrible struggle of putting the Cycleops trainer tire on my rear tire. I'm using the Cycleops Magus trainer and keep getting a bulge in the sidewall during use. In order to fix this I need to deflate the tire, massage the bulged area back into place, then re-inflate (typically to only 60-80psi). I then get a bulge in another portion of the sidewall.

Anyone have any thoughts as to why this is happening? It has never occurred with a non-trainer tire, the tube being used is, well, used, could that be causing a problem?