Hi there!
Last Friday my shop fitted a new set of Michelin Road 5's on my CT with Ride-On tyre protection sealant inside.
Upon leaving the shop I immediately noticed a new sound, which I would describe as a low frequency wind/buzz noise.
I went back to the shop today to make sure everything is fitted well and they couldn't see anything wrong. So my guess it's just the tyre and its profile that make the noise. I've had these tyres on my previous bike as well (Yamaha FZ6) but I didn't have the noise on that bike.
Has anyone else experienced this with these tyres? Maybe it will wear off after a certain amount of kilometers?