I've had tinnitus since my teens. I worked in an aluminum Mill for 2 summers. Gunshots mixed in with concerts and no effective ear protection in the 60's wrecked my hearing and gave me that herd of ciccadas I hear. Sometimes the pitch and intensity changes. I started using E.A.R. plugs in the 70's but even then after a ride of any distance it left me with more buzzing. So yeah, I blame riding and everything else. Just remember loud pipes save lives
If you can hear them. Sarcasm intended.