Hi
Forty Eight 2017 - have a strange noice from rear wheel, at the moment the noice starts after have been driving 10 miles (no noice if the bike is cold) - it seems to get worse.
I´m thinking can it be bad bearings ? or ?
the bike had only 1900 miles on it.

Any one had the same experience or have any idears
See attached video,

Thanks in advance
regards
EIS

 

Try rubbing a bar of soap on the sides of the belt and see if the noise changes or is gone.
If that makes no difference loosen the wheel and slide it forward enough that you can get the belt off the pulley and try spinning the wheel to see if it's the bearings growling.