other than the fact that the process is no good, one of the reason they are bubbling up is because you leave your car exposed in the sun for a long period of time.
i purchased my carbon mirror covers from renn spec and had it on for about a year now with no problem, you just need to know how to take care of them
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08 e92 M3
07 e90 335i
06 R53 S
04 Z33
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