Originally Posted by
msu2001la
Both wheelsets are used on the same bike, resin pads. I should add that the XT rotors are on a carbon wheelset whereas the RT56 are on alloy wheels. The carbon wheels might just amplify the sound a bit.
interesting
and curious - why RT56 rotors on a GRX bike ? - I believe you can use the better rotors (RT6x etc)
(for my one bike - RT56 rotors are installed due to the calipers ... low end M396 or something like that)