Hello there, Recently my rear brakes (I think) have started making a squealing noise when reversing (Definitely no stones trapped anywhere). It doesn't happen all the time but it is getting more frequent. During xmas is when I noticed it more and actually recorded a short audio clip on my phone. If you could/want to hear it, I've uploaded the audio here: https://clyp.it/je4ezzcf That is me reversing out of my driveway slowly, it squeals lightly but not continuously and then towards the end of the recording, when i press the brakes lightly it just goes really loud. The discs and pads were replaced around a year ago and I do not cover that many miles a year.. it never made this noise until recently. Any help appreciated! Thanks.