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Old 09-27-2022, 12:17 AM #16
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Originally Posted by brillo_76 View Post
If you really look closely. The 199mm calipers are just slightly wider then stock . They use the same brake pads as stock. The 231mm calipers use a different backing plate that's longer and spaces the 4 pistons out further. Both Tundra brake calipers use the same think rotor.

The actual braking pad material on both is the same. The 231mm have more air spacing with the larger pad back plates. They will not fit r16 rims.

So the measurement is the brake pad . Hope this helps.



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So they're just wider to accommodate a thicker rotor?

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Old 09-27-2022, 12:50 AM #17
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Just found a post on yotatech that says I'll have to trim the dust shields to fit the 199mm calipers because my rig came with 15" wheels from the factory.

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Old 09-27-2022, 04:38 PM #18
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Quote:
Originally Posted by brillo_76 View Post
I have the same rims as above and my fit 199mm tundra calipers without any spacers etc. I need to investigate this.

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Hey Brillo I took a couple of pics so you could see what I was dealing with. I am not sure maybe a different brand of caliper would of worked in 199 and this is unique to Callahan? There is a tab that sticks out that is just enough that it would not fit. With the 1/4 spacer I can get just the tip of my pinkie in there now. Granted it probably would not of taken much to grind it off.
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Old 09-27-2022, 04:53 PM #19
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The water is getting muddier. I wonder if Napa would let me return them if I dry fit them and they didn't work with my wheels.

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Grinding the wheels isn't that hard, I did it as well. It's just a high point that needs to be flattened out. I had no issues with balancing as I took a uniform amount of aluminum off each spoke.

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Old 09-28-2022, 08:29 AM #20
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Hey Brillo I took a couple of pics so you could see what I was dealing with. I am not sure maybe a different brand of caliper would of worked in 199 and this is unique to Callahan? There is a tab that sticks out that is just enough that it would not fit. With the 1/4 spacer I can get just the tip of my pinkie in there now. Granted it probably would not of taken much to grind it off.
Wow..... Interesting....
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Old 09-28-2022, 08:31 AM #21
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This may help visualize the difference 231 vs 199.. :-)
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Old 09-28-2022, 11:37 AM #22
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Wow..... Interesting....
I'm starting to wonder if people with rubbing issues on the split 3-spoke wheels are installing calipers with aftermarket castings.
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Old 09-28-2022, 12:05 PM #23
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I was under the impression that all calipers are just remanufactured Toyota ones with new seals and pistons and then marketed as their brand. Did Toyota by chance have two castings for the 199mm calipers? Like for two different wheel sizes like we have on our 3rd gens?

I bought Powerstop/Callahan calipers and they were indeed just painted Toyota castings.
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Old 09-28-2022, 01:37 PM #24
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I was under the impression that all calipers are just remanufactured Toyota ones with new seals and pistons and then marketed as their brand. Did Toyota by chance have two castings for the 199mm calipers? Like for two different wheel sizes like we have on our 3rd gens?

I bought Powerstop/Callahan calipers and they were indeed just painted Toyota castings.
I thought they were all rebuilt Toyota calipers too but I don't understand why some people with the split 3-spokes have rubbing issues while others do not. The only variable seems to be the caliper shape/dimensions.
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Old 09-28-2022, 02:42 PM #25
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Yes I believe it's the caliper castings. I use oem toyota calipers that I rebuild myself. I can see some of these castings are different thus why some are fitting and others are not.



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Last edited by brillo_76; 09-28-2022 at 04:49 PM. Reason: missed a word
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