Noisy disk brakes

daviddd

The squeal from my Shimano XT disc brakes on my top-end Focus carbon MTB is unbearable, and it's got to the point where I've practically stopped using it. The noise is huge front and rear and inhibits me from braking properly, apart from scaring people. I'm likely to cause heart attacks. I've read loads of advice about this common problem, and have cleaned everything, sanded the rotor, centered the caliper and wheel, bled the hydraulic system and replaced the pads with Swisstop greens at £20 a pair. I'm holding back from spending another £20-30 on new rotors and even new brake units. This puts me off using discs altogether and going back to rim brakes.