I don't know how serious miniscule resonant vibrations of the side panels might be as far introducing tracking errors to a spinning disk. I suppose that somebody has researched vibration vis-a-vis tracking errors, because it is important for portable cd players that joggers and others wear.I suspect, however, that it is pretty minor. "Tweak" would be the appropriate term.
I do know that over 40% (it may be more - I forget) of the data on a cd is sophisticated error correction code (of various levels). So, there is quite a bit of room for correctable errors.