I have it - I know it's biking related even though I wore ear plugs (some may have been too soft of a material, and I also question if I could have sustained tinitus from just eh vibrations and/or air pressures on my sinuses, but I digress).
I've read up on it, and haven't read the whole thread, and you should know that diet influences the strength of many people's tinitus.
"After reading through this thread I've come to the conclusion
that more people cruise the internet looking for reasons why
X bike won't work in Y scenario rather than actually riding
their motorcycles." -- RyanR