Tundra brake mod... ideas and questions

[bigtimeweb]

I knew the Hawk pads were overrated. I guess the Brembo rotors are too. Thanks for the heads up. I think oem or Wagner is the way to go. Makes sure you are torquing your lugnuts properly.

Not so fast on the Wagner. My drums from them rusted within a week, and my rotors are iffy with slight vibration....we're about 3mo in.

 

[biglar]

I think what would really help is if someone who's done the conversion could measure just how large inside diameter wheel is needed. I have aftermarket Pacer wheels and can't relate the size to any of the various Toyota wheels to know if the 231mm calipers will clear.

Thanks

Lar.

 

[FLEXincRunner]

Gen 3 Toyota 4Runner Tundra Brake Swap: Off-Road.com

 

[BTO]

Not so fast on the Wagner. My drums from them rusted within a week, and my rotors are iffy with slight vibration....we're about 3mo in.

Rusted drums are no big deal at all but warped rotors are. I guess I'll cross Wagner off the short list too then.

 

[zcruiser]

I think what would really help is if someone who's done the conversion could measure just how large inside diameter wheel is needed. I have aftermarket Pacer wheels and can't relate the size to any of the various Toyota wheels to know if the 231mm calipers will clear.

Thanks

Lar.

It's not the I.D. of the wheel that's the problem, since the Tundra rotor and 4Runner rotor are the same diameter, and the Tundra caliper doesn't add any more distance beyond the rotor diameter than the 4Runner caliper does. Rather, it's how much caliper overhang there is... The Tundra caliper hangs further outboard of the rotor than the 4Runner caliper does (distance "A" in the diagram above).

I'll try to take a measurement tomorrow...

 

[zcruiser]

Took a couple measurements to determine the clearance between my Tundra calipers and the inside of my 16" wheels.

Looks to be about 3/8"...

The distance from the rotor to the inside of the wheel is just under 3" (looks like 2-7/8")...

So, the distance from the rotor face to the outer dimension of the Tundra caliper is 2.5". Since the hub of the rotor is 1-7/8" from the rotor face, the distance "A" in the chart above (caliper overhang from outer hub surface) is 5/8".

So, if the inside surface of your wheel is closer than 2.5" to the outer surface of the rotor face or closer than 5/8" to your hub face, the Tundra calipers won't fit w/o modification. Of course, that's the bare minimum, probably want another 1/4" clearance for good measure.

 

[whipkiller]

OK, I have a question. (2 actually)

Do the Tundra rotors and calipers provide better braking (specifically when towing) or does it just prevent the rotors from warping?

So they just bolt right up, or is there modification necessary to install them?

 

[pat161]

Ones I was referring to are these:

I have the same rims on my 02 and the 231's fit no problem. Only trimming involved is the dust shield. Personally its the best mod I've done, it is absolutely the way Toyota should have done it from the factory and I regret wasting money trying to upgrade the stock setup.

 

[zcruiser]

OK, I have a question. (2 actually)

Do the Tundra rotors and calipers provide better braking (specifically when towing) or does it just prevent the rotors from warping?

So they just bolt right up, or is there modification necessary to install them?

The rotors are the same diameter as the stock T4R rotors, but they are thicker which helps prevent warping.

The braking advantage comes from the larger caliper and brake pad contact patch with the rotor.

The Tundra calipers bolt on to the stock mounting locations and the brake line, but there is trimming needed on the dust shield.

 

[Diagram14]

Would wheel spacers solve caliper clearance issues with the quuestionable 16"ers?

 

[twitchee2]

Would wheel spacers solve caliper clearance issues with the quuestionable 16"ers?

Yes. However, if you look at the 01/02 5 spoke rims you will see a the corner of the casting machined off. It is the exact spot that the the split 5 spokes need modification. I dont think it would be real difficult to change that on the split 5 spoke. The location is no load supporting.

 

[CoMarc]

OK, I have a question. (2 actually)

Do the Tundra rotors and calipers provide better braking (specifically when towing) or does it just prevent the rotors from warping?

So they just bolt right up, or is there modification necessary to install them?

I can only speak for the 231mm Tundra brakes as those are the ones I put on, but the definitely helped me with slowing down while towing without vibration. If you want to tow with the 4Runners, this brake mod is a must in my opinion!

They bolt right up to the current mounting holes, can use the same bolts and brake fluid line, and the only modification (assuming you have rims that are big enough to clear the biggere calipers) is trimming the dust shield which is very easy to do with tin snips.

 

[whipkiller]

Thanks guys, it sounds like this is a worthwhile mod.

I have the '01 5-spoke wheels, will they clear the 231mm's?

 

[twitchee2]

Thanks guys, it sounds like this is a worthwhile mod.

I have the '01 5-spoke wheels, will they clear the 231mm's?

yes.

 

[whipkiller]

:thanks:

 

[zcruiser]

I thought that pic looked familiar!

 

[eric_simo99]

I have the stock 15" wheels on the 97 4Runner 2WD basic model and the PO says it often had pedal pulsation upon braking (and still has severe pedal pulsation today).
Since I will have to do the brakes anyway, and since the Tundra modification won't work for the 15" wheels ... may I ask ... if I keep the wheels ...
Q: What brake component improvements/modifications are available to me?

Personally, I would look for a set of nice 16" 99-02 wheels. Usually see some pretty decent deals on craigslist (and a lot of them have a good amount of tread left). Or you could go for the Tundra/Sequoia 17" wheels, which look pretty bad a$$ IMO. I suppose your 'runner is more of a kiddy-hauler than anything, though, so you're probably not interested in that sort of thing.
:lol:

 

[legokcen]

I knew the Hawk pads were overrated. I guess the Brembo rotors are too. Thanks for the heads up. I think oem or Wagner is the way to go. Makes sure you are torquing your lugnuts properly.

Which Hawk Pads were they? Which series?

 

[legokcen]

I have the stock 15" wheels on the 97 4Runner 2WD basic model and the PO says it often had pedal pulsation upon braking (and still has severe pedal pulsation today).

Since I will have to do the brakes anyway, and since the Tundra modification won't work for the 15" wheels ... may I ask ... if I keep the wheels ...

Q: What brake component improvements/modifications are available to me?

A more aggressive pad is about the only thing you can do. That, and use a high temp fluid like ATE superblue or Motul. Make sure to fully flush it through.

 

[Maritimer]

If this gives better braking, it's something I'll have to look into. I have 16" rims. So basically we're putting Tundra disc brakes on the front and leaving the rear alone?

I find the braking is a little sluggish compared to the CR-V--whose windshield I almost go through every time I apply the brakes in it after driving the 4Runner.