Hi m8,
I definitely have some on my back rim, don´t know how much now, but can take a look when I´ll be in my garage if you want

Having trouble with my 2021 R3R too, have the bike for roughly a month and there´s quite a lot of issues, front end vibrations (probably bad tire I guess), indicator issue (the common one, even after 3 software updates...) and also a tinkling sound coming from the exhaust part of bike while engine braking (seems like a stainless steel plating hitting the dark part of the exhaust, still hope from a fix at the dealer).