I'm glad this came up. I also had way too much fun with concerts and race cars when younger, so some tinnitus is definitely a reality. For kicks this past weekend I downloaded the free NIOSH sound level app and turned it on with zero effort to calibrate or likely even point mic properly. Bottom line is a good Saturday night jam session averaged 65-72db with 1-2 occasional peaks more like 78-80.
Curious if anyone has consulted physicians about this topic.....my early google info says those numbers shouldn't do much harm but come Sunday I'm not sure I agree.