I bought some M575 brakes, and some Superstar floating rotors (203 front 180 rear)
I am having real trouble getting them to be any good at all at stopping me, even after changing pads multiple times, multiple types. I have asked the guy at the local bike shop, and he says that it is the superstar rotors.
Firstly, he thinks the sizes of the rotors may be too big to get heat in, and secondly the materials Superstar use arent good enough to use.
I can imagine the rotor size issue could be a problem... but surely not to the extent where I really cant slow down at any speed?
Secondly are Superstar rotors that bad? I can usually find references to problems on the internet that people have posted, but I see hardly any when I look - is he correct or not with Superstar being pants?