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Warping Brake Rotors

Discussion in '1st Gen Tundras (2000-2006)' started by euro911s, Jan 16, 2014.

  1. Jan 16, 2014 at 3:41 PM
    #1
    euro911s

    euro911s [OP] 'Plays with Toys'

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    I only have 41k miles on my '02 Tundra and it isn't driven hard. When I replaced the OEM brake pads at 20k, I also replaced the OEM front rotors because they were warped. I replaced them with a set of Brembos.

    I just replaced them last night with a set of cryogenic-treated rotors.

    I'll have the OEMs and the Brembos turned and keep as spares, but hoping these cryos do the trick.
     
  2. Jan 16, 2014 at 4:09 PM
    #2
    650h1

    650h1 New Member

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    I'm not familiar with the first gen tundras, and what they used for rear brakes, but im guessing they are drum? Have you looked into those to make sure they are still good? an 02 with 41k miles seems like it may sit a lot, so its possible that your rear drums are not performing like they should be, causing most of the load to be placed on the front rotors, which would, in turn, cause them to wear prematurely.
     
  3. Jan 16, 2014 at 4:39 PM
    #3
    euro911s

    euro911s [OP] 'Plays with Toys'

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    Yeah, the rears are drums and the shoes are still OK. I had read that the 1st gen Tundras had 'weak' front brake systems and warping rotors was a fairly common occurrence. I'll search for some info on bias ... it has a variable bias compensation valve that I believe shifts more pressure to the rears as the load in the bed increases. Don't know if there's a user adjustment though ???
     
  4. Jan 16, 2014 at 4:46 PM
    #4
    650h1

    650h1 New Member

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    Not sure, I did see a rotor/pad set from powerstop made for towing and performance, for a decent price. If what you got doesn't work, I'd give them a try.
     
  5. Jan 16, 2014 at 5:52 PM
    #5
    jberry813

    jberry813 The Mad Scientist

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    First gen tundras came with two different calipers. The early year tundras came with a smaller calipers and smaller pads. If you look on the calipers themselves, you can see a 13WE casting mark. These calipers were 199mm calipers. Later when Toyota realized everyone was baking their brakes, they updated the calipers and now use a larger larger 13WL casted calipers, which are 231mm. The pads on the 13WE were less than 5" across while the 13WL pads are 5 5/16". The mounting holes are identical between the two. Essentially the smaller pad was much more susceptible to overheating. As such, drivers at the stoplight didn't even realize that while they are just holding their brake pedal down on an overheated pad was actually warping their rotors, hence the larger swept surface of the 13WL calipers. I believe they started using the 13WL calipers/pads in 2004. I know for a fact 05-06 had the update. Your best bet is to buy the upgraded calipers/pads.

    As for the cryo rotors, who did the cryo treatment? Not all are created equally.

    As for the front/rear brake bias adjustment, that's done just above the rear axle. There's a load sensing proportioning valve (LSPV) on the drivers side of the frame on the rear of the truck with what looks like a thin bent bar that runs down to the axle. The adjustment is easy. Look at the picture below. There's what looks like a threaded bolt angled at 1:00 o'clock position. There's two nuts on it, one over and one under the little metal bracket that connects to the previously mentioned thin bar. Adjust the bolts up to add more rear brake bias, move down remove rear brake bias. If you run out of threads, several companies offer relocation brackets which are especially usefull in lifted applications. Jerry over at Bay Area Metal Fab (BAMF) has the most adjustable one I've seen on the market: http://www.bayareametalfab.com/Standard-BPV-Bracket-35-14-plate_p_19.html
    Toytec offers a very simple bracket: http://toyteclifts.3dcartstores.com/Brake-Proportioning-Valve-Bracket-Kit_p_134.html


    [​IMG]
     
    himmy33 and csuviper like this.
  6. Jan 17, 2014 at 3:53 PM
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    euro911s

    euro911s [OP] 'Plays with Toys'

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    Hey, thanks for the info, Jason. I am trying to find a good used camper shell at the moment, so I will probably wait to do any bias adjustments until afterwards.

    I don't remember the brand of the rotors off the top of my head, but they were a little pricey (a tad less than $300). I didn't replace the front pads when I installed the cryos because they still looked good with a lot of material on them, but I'll verify which calipers I have prior to ordering new pads. May be worth the effort to change the calipers if I can retain the new (and old) rotors.
     
  7. Apr 9, 2014 at 6:01 PM
    #7
    Bruha

    Bruha New Member

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    I have 02 also. My brakes sucked. I bought a set of calipers off a wrecked 05 and installed them with hawk lts pads and stop tech cryo treated rotors. It stops great now!

    I also did the rear brakes just to make sure everything was right.

    I would recommend using the rear parking brake every time you park. It keeps the rear brakes adjusted properly.
     
    Bob likes this.
  8. Mar 17, 2015 at 1:49 AM
    #8
    Rkcruza

    Rkcruza New Member

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    De Badged / Decaled, Firestone Ride Rite Air Bags w/ Daystar Cups, 17" Rims, Big Brake kit w/ slotted & drilled rotors, plus lots of work related stuff.
    Toyota changed to the larger set up in 2003 and actually installed larger rotors, calipers etc. There was a TSB out and if you screamed loud enough they redid the whole works which consisted of all new from (and including) the backing plates out. They also changed out the rear drums to ones from I think a V-8 4-runner (same size, just heavier drums that were supposed to last longer). Got mine swapped out at 5600 miles. Ran the replacement rotors until almost 100k with new pads about every 15k. Put on drilled and slotted rotors at about 100 k and they have helped a lot. If the bigger calipers will work with the smaller rotors that would help as it is pricey to do the whole caliper / rotor swap like was done on mine. If the truck is driven empty the stock stuff worked OK...if you are usually loaded up the stock brakes sucked and didn't last very long (though the rears lived just fine).
     
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