i also suffer a mild ringing in both ears after listoning to music loud in the car 2 years ago, i now have yearly checks and have been told that there is no cure......
the stereo was not that loud but the doc told me it was the distortion that harmed me (high frequency distortion and "not so loud volumes" is bad)
i see many under 24yrs blasting there music on the strrets i i think to myself..."i was there once" now i have to go to bed every night with a buzzing sound