08-01-2012, 11:38 AM | #1 |
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Uneven brake pad wear
I changed the rear pads on my 1M today and found that the pads on the drivers side had really uneven wear. The front edge of one pad was wore much more that the front edge of the other pad. This condition was reversed on the back edge of the pads. Take a look at the photo to see the angled wear.
On the passenger side the pad wear was the same (nice and even) on both pads. Any idea on what would cause the uneven wear?
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08-01-2012, 03:54 PM | #3 |
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I don't see how that could be the case; the outboard pad wear should not be affected by the piston - it's alignment is determined by the caliper. This kind of wear is extremely odd. Looks like the whole caliper has been cocked at an angle. Are the guides and guide bolts in good shape?
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08-01-2012, 08:29 PM | #4 |
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Really strange for a rear pad to do this. I used to have this on the fronts of my 330 before I changed to brass guide pins and got rid of the rubber. Really seems like there is way too much pressure applied and the calipers are deflecting. Just never seen it on a rear before.
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08-10-2012, 12:21 AM | #5 |
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The guide sleeves are rubber so under load the caliper will try to twist on you. To minimize this issue you can install caliper bushings as the cheaper route or BBK.
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