You are reading a single comment by @Tallboy and its replies.
Click here to read the full conversation.
-
First result from a quick search
https://thebottomgear.co.uk/servicing-trp-spyre-brakes/
https://singletrackworld.com/forum/topic/psa-trp-spyre-rebuild-guide/
Sound like the bearing.
Undo cable, squeeze arm with your hand, feel how smooth/rough it is.