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Why Resin pads only?
Surely they're just stainless steel like any other brake disc? Are Shimano worried about people wearing the brake rotors out too soon or something if used with Sintered pads? Are they made of a significantly softer material than the XT rotors for instance?
dunno.
Noticed it whilst cleaning the GF's bike this evening. She's got 180mm rotors front and back on her new bike with M446 brakes and the OEM pads. She's only about 9 1/2 stone, and to be honest, the brakes are too bloody good! I had a go on it, don't think I've ridden anything as sharp short of a set of 4 pots on 203mm rotors. Basically, she gets no modulation at all, so was thinking of just putting sintered pads on and/or a 160mm rotor on the back at least.
Has got me puzzled why a rotor (MUCH harder material than a brake pad) can only be used with a Resin pad! 😕
Throw some sintered pads in and you'll find out 😉
We had a bike in the other day with sintered pads and resin only rotors, and the rotors were worn right down and scored to hell.
I think it's the cheaper discs. Must be a softer disc material and the sintered pads are metallic based and pretty hard.
They are still made of some sort of stainless steel, but the 'resin only' have not been hardened. I would suspect the grade of stainless is cheaper as well as it doesn't need to be hardened.
As above if you fit sintered pads the rotor gets all chewed up and dies very quickly
Ok cheers guys