Brake is scraping - how far can I drive before fixing?

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Old 12 Oct 2009, 02:18 pm   #1 (permalink)
Human Factors in the Training of Pilots By Jefferson M. Koonce
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Default Brake is scraping - how far can I drive before fixing?

Hello, I have a 1993 Camry with 215k miles. Yesterday, the driver's
side front brake began making an unpleasant scraping noise when the
brakes were applied. The brakes are getting to the age where they need
to be replaced, but this is the first time the brake has made any kind
of noise. There are tiny metal shavings where the pad touches the
rotor, but there is still between 1/4 inch and 3/8 inch on the pad.
There is maybe 30% to 40% more pad on the passenger side pad.

I have about a 100 mile drive back home. Can I have this fixed at
home, or does it need immediate attention? What's the downside to
driving another 100 miles before fixing?

Also, the car is pulsing at high speeds when the brakes are applied,
which I think means the drums/rotors are out of round, so perhaps my
rotors need to be turned/replaced in any event?

Thanks,
SJ
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Old 13 Oct 2009, 05:58 am   #2 (permalink)
GeoffW1
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Default Re: Brake is scraping - how far can I drive before fixing?

On Oct 13, 6:18*am, "Human Factors in the Training of Pilots By
Jefferson M. Koonce" <stephenja...@gmail.com> wrote:
> Hello, I have a 1993 Camry with 215k miles. Yesterday, the driver's
> side front brake began making an unpleasant scraping noise when the
> brakes were applied. The brakes are getting to the age where they need
> to be replaced, but this is the first time the brake has made any kind
> of noise. There are tiny metal shavings where the pad touches the
> rotor, but there is still between 1/4 inch and 3/8 inch on the pad.
> There is maybe 30% to 40% more pad on the passenger side pad.
>
> I have about a 100 mile drive back home. Can I have this fixed at
> home, or does it need immediate attention? What's the downside to
> driving another 100 miles before fixing?
>
> Also, the car is pulsing at high speeds when the brakes are applied,
> which I think means the drums/rotors are out of round, so perhaps my
> rotors need to be turned/replaced in any event?
>
> Thanks,
> SJ


Hi,

This is possibly a brake wear indicator tag contacting the brake
rotor. However it should not start when there is still as much as 1/4"
minimum of pad material still left. It may put a slight groove in your
rotor at the edge of the braking area.

However don't take ANY chances with your brakes. Do have it looked at
the confirm this or otherwise before driving 100 miles. That's too far
with a question over the brakes.

Cheers
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Old 15 Oct 2009, 08:37 pm   #3 (permalink)
john
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Default Re: Brake is scraping - how far can I drive before fixing?

Sounds like the brakes are not applying equally on both sides. Also,
the inner pads which you can't normally see may have worn down a lot
more than the outer pad.

If you can't make a proper diagnosis then the proper recommendation
should be: have it towed and inspected by a competent mechanic.



On Oct 12, 12:18*pm, "Human Factors in the Training of Pilots By
Jefferson M. Koonce" <stephenja...@gmail.com> wrote:
> Hello, I have a 1993 Camry with 215k miles. Yesterday, the driver's
> side front brake began making an unpleasant scraping noise when the
> brakes were applied. The brakes are getting to the age where they need
> to be replaced, but this is the first time the brake has made any kind
> of noise. There are tiny metal shavings where the pad touches the
> rotor, but there is still between 1/4 inch and 3/8 inch on the pad.
> There is maybe 30% to 40% more pad on the passenger side pad.
>
> I have about a 100 mile drive back home. Can I have this fixed at
> home, or does it need immediate attention? What's the downside to
> driving another 100 miles before fixing?
>
> Also, the car is pulsing at high speeds when the brakes are applied,
> which I think means the drums/rotors are out of round, so perhaps my
> rotors need to be turned/replaced in any event?
>
> Thanks,
> SJ


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Old 15 Oct 2009, 08:46 pm   #4 (permalink)
john
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Default Re: Brake is scraping - how far can I drive before fixing?

I think you're going to end up needing not only rotors and pads. I'd
recommend Akebono ProAct ceramic pads. Raybestos rotors (~$17 service
grade online price rockauto.com) are fine if you don't want to go
Brembo (~$60) or Raybestos Advanced Technology (~$45).

You're likely to need caliper/anchor-pins inspections/cleaning/
replacment to resolve the binding issue (uneven wear). Probably should
change out the brake fluid as well. I'd use Castrol GT LMA (low
moisture activity) or Valvoline Synthetic fluids.

For what little metal today's rotors have, I'd replace than to
resurface them.

The following article is for new rotors:
http://www.brakeandfrontend.com/Arti...necessary.aspx


On Oct 12, 12:18*pm, "Human Factors in the Training of Pilots By
Jefferson M. Koonce" <stephenja...@gmail.com> wrote:
> Also, the car is pulsing at high speeds when the brakes are applied,
> which I think means the drums/rotors are out of round, so perhaps my
> rotors need to be turned/replaced in any event?
>
> Thanks,
> SJ


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