My rear brake failed. I picked up my bike after I had the rear tyre replaced and almost straight away I noticed the rear brake wasn't working. It was great before and had a good amount of grab but after the tyre was replaced had only about a 2% grab (pretty useless) so I turned around an went straight back. The mechanic said they never touched the brakes or anything else just removed the wheel. I asked if they had sprayed anything on the rim to clean it and got some on the disc as the break is slipping. He said he told the young guy to make sure he didn't get any on the breaks ?? .Anyway took the bike back to my workshop removed the pads cleaned & sanded them and replaced. All works well now. The interesting thing is that once they had been contaminated the pads developed a glaze almost immediately.
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