Bed the brake pads
08-16-2007, 02:52 AM
#2
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My Ride: Estoril Blue 440i GC
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Bedding in the pads will help reduce any disc warping or glazing of the pad surface when you replace the pads. All you have to do is not use the brakes hard for a few hundred miles (unless you have to, of course!). This allows the new pads to wear to the contours of the disc, and so achieve full contact. Imagine that your old discs are (in an extreme example) rippled concentrically (did I spell that right??). With a new pad, the contact will only be on the "high" spots, therefore it will generate more heat in those areas, and those temperatures may be too high for the pad material, and it will glaze, like ceramic, and become very hard and shiny - just what you don't want to slow you down. Allowing moderate braking to start with, the pads will wear into the high and low spots, so after a few hundred miles, full contat area will be achieved.
This will have less of an effect if you replace discs and pads at the same time, but I would consider it good practice to still run in, or bed in, pads. I also "run in" any new tyres too - give them a few hundred miles to settle down before subjecting them to serious cornering or braking stress. Maybe over the top, I don't know, but that's how I was brought up!!
Mike
This will have less of an effect if you replace discs and pads at the same time, but I would consider it good practice to still run in, or bed in, pads. I also "run in" any new tyres too - give them a few hundred miles to settle down before subjecting them to serious cornering or braking stress. Maybe over the top, I don't know, but that's how I was brought up!!
Mike
08-16-2007, 03:04 AM
#3
Read this article for what bedding is and how to do it.
http://www.zeckhausen.com/bedding_in_brakes.htm
http://www.zeckhausen.com/bedding_in_brakes.htm
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