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  1. #1
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    Default Uneven wear on rear drums

    So I heard some metal on metal action from the rear of my 98 K1500 Suburban this Saturday and on Sunday pulled the rear wheels to have a look. The passenger side had about 50% of the lining left. On the drivers side, the leading shoe lining was 3/16th above the rivets while the lagging shoe lining was gone and the rivets were throughly decapitated. Both wheel cylinders were replaced when the rear shoes were replaced last. The brake fluid was replaced and the system flushed last year. I have not experienced any braking issues since the fluid was changed. I had previously had issues with the antilock brakes activating in situations where it was not necessary. The fresh fluid corrected this.

    Does anyone have an opinion as to what might have caused such a dramatic difference in wear pattern? Gas mileage has been normal - around 16 mpg on the interstate. I would have expected much lower if I was riding around with the rear brakes applied on one side.
    86 911 Porsche Carrera
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  2. #2

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    If brakes were adjusted correctly I would replace the hardware (springs) and make sure the contact points on the backing plates are lubed up.

    97 Chevrolet Suburban K1500 5.7L
    78 GMC High Sierra K1500
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  3. #3
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    I am not sure about the adjustment the last time around. Seems to be correct now though. I think I will run for a few months and then check the wear to ensure it is even. If it looks like it is heading for a repeat, I change the springs and re-adjust.

  4. #4

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    Check the parking brake cable. I've replaced the right side before, and should check it again. It seems to rust up at the point where it crosses over the pig.
    The left side doesn't have as many pinch points, but it might be worth a look.

    Good luck,

    1999 Chevy K2500 Suburban 350
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  5. #5
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    You know, I got an email from a buddy that suggested the same thing. I rarely use the parking brake and that is all the more reason to check it.

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