There is a 1mm wide section on the top of my brake pads that is not worn with the rest of the brake pad. This seems like an issue with the spacing of the brake caliper.
The frame (Ibis Exie) is designed for a 160mm rotor, and I have a SRAM 20mm spacer under the caliper. The brakes are Shimano XT 2 piston brakes, and the rotor is a SRAM centerline 180mm rotor. Is it ok to use a sram spacer with shimano brakes? Based on where the unworn spot is the brake caliper needs to be moved 1mm towards the axle, but there are no washers under the caliper that could be removed to change that.
Also the rotor is worn and at end of life, so I’m replacing it along with the brake pads, could changing to a shimano rotor correct this issue?
by RedneckIntellectual
3 Comments
That’s good enough where it is, maybe replace a week earlier next time. Pretty even wear all round though.
Nah, it’s all good in terms of pad placement. That 1mm or so isn’t gonna hurt anything honestly. Either way you’ve got some nice “potato chips” there, definitely squeezed every ounce of life out of them.
It happens, you can’t expect every frame / caliper / adapter / rotor combo to be perfectly matched. A 1mm “unused” portion of a pad is not bad at all. Several mm I would call bad but not 1mm.
Different set of pads might show different amount of material exposed.
If it really really bothers you and you absolutely cannot live with this, you could have your frame’s brake mounts “faced” – this will shave a tiny bit of the material to ensure the mount surface is lined up with the wheel axle (thus perpendicular to the rotor), but that’s an expensive operation and judging by how even (otherwise) your pads are work you don’t need it…