Guest Posted February 8, 2009 Share Posted February 8, 2009 HiI am servicing my bike at the mo and noticed that my brake discs have a very slight ridge around the outer edge. I checked the thickness of the discs with a micrometer and found them to be 4.5mm thick. The Haynes manual states that new discs are 5mm and should be replaced at 4.5mm.The bike stops perfectly fine, do I really need to change them as I could do without shelling out £200 on a new set (probably and the rest!). They aren't scored or anything. Quote Link to comment Share on other sites More sharing options...
Guest Posted February 8, 2009 Share Posted February 8, 2009 HiI am servicing my bike at the mo and noticed that my brake discs have a very slight ridge around the outer edge. I checked the thickness of the discs with a micrometer and found them to be 4.5mm thick. The Haynes manual states that new discs are 5mm and should be replaced at 4.5mm.The bike stops perfectly fine, do I really need to change them as I could do without shelling out £200 on a new set (probably and the rest!). They aren't scored or anything. when is the MOT due... if soon then i would leave till then, or ask your freindly dealer for advice.. if you change the disks you will need new pads too.. Quote Link to comment Share on other sites More sharing options...
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