Brake photos from 2008 w/ 230k miles

Discussion in 'Gen 2 Prius Care, Maintenance and Troubleshooting' started by FreydNot, Jun 1, 2021.

  1. FreydNot

    FreydNot Member

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    My 2008 still has the factory brakes. I got it used in 2010 with 25k miles on it. I've put on quite a few since then. Up until Covid I was driving majority highway miles. Lately it's been more city driving. It's lived it whole lift in the Pacific Northwest.

    Lately I've been hearing a squeal that I thought was one of the brake pad wear indicators, but now that I've had a closer look, I'm not sure it is. I've only heard the squeal a couple of times and it's gone away quickly each time.

    I keep going back and forth between replacing front pads and rotors with Toyota OEM parts, just doing the pads, and not doing anything. It's a 13 year old car, for crying out loud. I plan to keep driving it for a long time, so why not invest a bit in new parts.

    Anyway, I've attached pictures for those interested. I don't know why I didn't get a total thickness on the right side; brain fart I guess.

    Sorry for the completely useless and otherwise lacking photos. Of course I zeroed out the calipers considering the nut thickness when I used it as a spacer.

    Front-Left-inner-pad.jpg Front-Left-outter-pad.jpg Front-Left-outter-pad-measure-result.jpg Front-Left-rotor.jpg Front-Left-rotor-2.jpg Front-Left-rotor-inner-thickness.jpg Front-Left-rotor-outter-thickness.jpg Front-Left-rotor-total-width.jpg Front-Right-outter-pad.jpg Front-Right-outter-pad-close.jpg Front-Right-outter-pad-measure-1.jpg Front-Right-outter-pad-measure-result.jpg Front-Right-rotor.jpg Front-Right-rotor-inner-thickness.jpg Front-Right-rotor-outter-thickness.jpg Front-Left-inner-pad.jpg Front-Left-outter-pad.jpg Front-Left-outter-pad-measure-result.jpg Front-Left-rotor.jpg Front-Left-rotor-2.jpg Front-Left-rotor-inner-thickness.jpg Front-Left-rotor-outter-thickness.jpg Front-Left-rotor-total-width.jpg Front-Right-outter-pad.jpg Front-Right-outter-pad-close.jpg Front-Right-outter-pad-measure-1.jpg Front-Right-outter-pad-measure-result.jpg Front-Right-rotor.jpg Front-Right-rotor-inner-thickness.jpg Front-Right-rotor-outter-thickness.jpg
     
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  2. ChapmanF

    ChapmanF Senior Member

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    Not much salt used there?
     
  3. FreydNot

    FreydNot Member

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    Not none, but we only see a week or two of snow / ice. Nothing like the east coast.
     
  4. bisco

    bisco cookie crumbler

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    i would throw some pads in and call it a day
     
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  5. mr_guy_mann

    mr_guy_mann Senior Member

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    Sigh. My new rotors looked worse than that 5000 miles after I installed them. Yeah salt. :(

    Posted via the PriusChat mobile app.
     
  6. FreydNot

    FreydNot Member

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    I realized I spelled brake wrong in the title but I don't seem to be able to edit the post now. Oh well, spelling is not my strong suit.

    I decided to keep the rotors as-is and replace the pads. The passenger side showed more wear. Both inner pads showed uneven wear. When I took everything apart I was surprised how easily everything came loose. The caliper pins broke free without neededing a second wrench on the inside nut. The calipers didn't appear to be frozen or caught up in the travel, but I suppose the proof is in the different wear measurements.

    On to the photos. This post is the front right (passenger side). The next post will be front left (driver side).

    FR old pads outer
    20210623_183307 FR old pads outter.jpg

    FR old pads inner
    20210623_183314 FR old pads inner.jpg

    FR old pads both
    20210623_183318 FR old pads both.jpg

    FR outer old and new. Pretty even wear.
    20210623_183847 FR outter old and new.jpg

    FR outer thickness - 3.64mm of material remains
    20210623_183934 FR outter thickness.jpg

    FR inner old and new
    20210623_183959 FR inner old and new.jpg

    FR inner old uneven wear. Thin and uneven.
    20210623_184024FR inner old uneven wear.jpg

    FR inner thickness, thick end - 2.01mm of material remains
    20210623_184040 FR inner thickness one end.jpg

    FR inner thickness, thin end - 1.20mm of material remains. Yikes, I guess it was time to replace the pads!
    20210623_184105 FR inner thickness other end.jpg

    FR inner, close up
    20210623_184125 FR inner detail 1.jpg

    FR inner, another close up
    20210623_184135 FR inner detail 2.jpg

    FR new pads both
    20210623_193721 FR new pads both.jpg

    FR new pads outer
    20210623_193724 FR new pads outter.jpg

    FR new pads inner
    20210623_193729 FR new pads inner.jpg
     
  7. FreydNot

    FreydNot Member

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    Front left (driver side) photos. Not as much wear on this side, but the inner also shows uneven wear. Sorry the order is a little different.

    FL old pads both
    20210623_200559 FL old pads both.jpg

    FL old pads outer
    20210623_200601 FL old pads outter.jpg

    FL old pads inner
    20210623_200604 FL old pads inner.jpg

    FL inner old and new
    20210623_200831 FL inner old and new.jpg

    FL inner old uneven wear
    20210623_200850 FL inner old uneven wear.jpg


    FL inner thickness thin end - 2.40mm of material remains
    20210623_200923 FL inner thickness one end.jpg


    FL inner thickness thick end - 2.92mm of material remains
    20210623_200936 FL inner thickness other end.jpg

    FL outer old and new
    20210623_201003 FL outter old and new.jpg

    FL outer thickness thick end- 4.46mm of material remains
    20210623_201032 FL outter thickness one end.jpg

    FL outer thickness thin end- 4.37mm of material remains.
    20210623_201055 FL outter thickness other end.jpg

    FL inner old uneven wear
    20210623_201111.jpg

    FL outer old even wear
    20210623_201117 FL outter old even wear.jpg
     
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  8. FreydNot

    FreydNot Member

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    I went around a few times trying to figure out how to deal with the brake fluid when pushing the pistons back in. I wanted to do a full brake fluid flush (and I still plan to), but I ended up opening the bleeder valves and letting the fluid escape the system. I used about 6 fl oz (half a bottle) of DOT3 to get the reservoir back to the full line.

    The waste fluid definitely has a brownish color. I guess 13 years of service will do that.

    When it was all done I noticed the brake pedal felt much firmer, but that has changed and it's back to the normal spongy it used to be. I haven't noticed the barking noises since completing the pad change. I've still got three and a half bottles of DOT3 fluid and plan to get around to the full flush after the heat wave dies down.

    old brake fluid.jpg
     
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  9. mr_guy_mann

    mr_guy_mann Senior Member

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    As long as the old brake pads moved freely in the bracket, and the caliper pins moved freely as well, then I wouldn't worry about the differences in pad thickness. See that sometimes- figure it's the inner pad running a little "hotter" (less ventilation) than the outer and just wears a bit quicker.

    Crickey, you call that old brake fluid? Nah, HERE'S old brake fluid. From a couple of old SUV's. DSC_7361.JPG DSC_6780.JPG

    On both of these pics I have a moderately bright LED flashlight shining from the back of the brake fluid - and you can't see it at all.
    Posted via the PriusChat mobile app.
     
    #9 mr_guy_mann, Jun 28, 2021
    Last edited: Jun 28, 2021
  10. FreydNot

    FreydNot Member

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    Wow, that is dirty brake fluid.
     
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