Originally Posted by vintagebob
It's possible. My front is a 90/90-21 which is a bias-ply. I can't locate where the sound is coming from though. Maybe some other 800XC owners will chime in.
I've owned several motorcycles in my time and have never experienced anything like the sound from these tires.
I've got a couple thousand kms on mine and haven't noticed any difference in noise from the OEM Battlewings. I'll try to listen more carefully on the way to work tomorrow. Wonder if it's just your road surface? Are you on asphalt or that lovely concrete stuff your highway dept is fond of using.