I have a 1 year old BMC Roadracer frame, and for the last few months bubbles are appearing under the clear coat. Slowly, the number and size of the bubbles is increasing, and at some places the bubbles push through the cleat coat, and can be easily felt. At first I though it was grime or sweat or something, but the bubbles sit under the clear coat.click here for imageclick here for image
They can be a bit tricky to spot, but they can be found all over the frame.
I returned my frame to the dealer, and they sent pictures to BMC to hear what they have to say. According to BMC, the bubbles are formed within the carbon glue / epoxy in a reaction to UV rays. They say it's purely cosmetically and is harmless. They don't see this as a warranty case. The best my dealer could do is a extension of the warranty on the paint / clear coat to 5 years.
I can't say I'm satisfied by this. UV rays damaging the epoxy doesn't exactly reassure me, and can't be conducive for the structural integrity of the frame. Furthermore, shouldn't the clear coat protect the epoxy from UV?
Should I demand a replacement frame? I don't feel that these bubbles are 'normal' and 'nothing to worry about'.