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Discussion Starter #1
I bought some new springs (NF210's) that have yet to be installed, and I figured I would take a shot at upgrading the brake system while I have everything apart. I'm a huge fan of cheap OEM swaps, and I'm convinced that there is at least one good brake swap upgrade out there using other OEM parts.

I consider any combination of these an "upgrade":

1. Larger disc
2. Significantly thicker disc (for the rear)
3. Significantly higher quality and/or stronger caliper

Because Centric has a nice open "scrape-able" catalog online with dimensions and specs, I started with the exact specs of the xB2 oem brakes rotors and calipers. Note that I am not necessarily endorsing this brand; I'm just using them as a reference. Here is what found for their xB2 discs and calipers:

Code:
REAR
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Rotor		Centric 12144161
			Outer Diameter	279.0mm
			Height		30.5mm
			Nom. Thick	10mm
			Min. Thick	8.5mm
			Hub Reg		62mm
			Bolt Size	14.6mm
			Bolt/Circle	5 x 114.3mm
			Weight		9.1lbs

Caliper		Centric 14144625/14144626
			Bore:		38mm
			Bleeder		10x1mm
			Port		10x1mm
			Mt Holes	12x1.25mm
			Pad		10x.13540	
			Brkt Cst#	T3
			CST#		TOKICO 1B

FRONT
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Rotor		Centric 12144147
			Outer Diameter	275.0mm
			Height		46.5mm
			Nom. Thick	25.0mm
			Min. Thick	22.0mm
			Hub Reg.	62.0mm
			Bolt Size	14.5mm
			Bolt Circle	5 x 114.3mm
			Weight		14.3lbs

Caliper		Centric 14144271/14144272
			Bore:		63.5mm
			Bleeder		7x1mm
			Port		10x1mm
			Mt Holes	12x1.25mm
			Pad		10x.12100	
			Brkt Cst#	25VC
			CST#		63-25
I am currently in the process of narrowing down compatible discs and rotors that may be swap candidates. Currently I am down to 53 discs that have the right hub diameter, bolt size, and bolt pattern. I'll post a list of my findings when I have it further narrowed. I haven't begun sorting through calipers, but I have a list of 253 to sort through.

I will use this thread as a running log of my research; no guarantee on results.
 

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Discussion Starter #2 (Edited)
Possible upgraded rotors...

Format:

Centric part number, diameter x thickness x height (all sizes in mm)

Front (stock is 275x25x46.5):

120.44083, 295.9 x 32.0 x 50.8
120.44088, 296.0 x 28.0 x 49.2
120.44146, 296.0 x 28.0 x 49.5
120.44102, 286.0 x 32.0 x 50.5
120.44103, 323.0 x 30.0 x 49.0
120.44107, 315.0 x 28.0 x 53.1
120.44122, 315.0 x 30.0 x 50.3
120.44130, 319.0 x 28.0 x 49.3
120.44170, 334.0 x 30.0 x 50.7

Rear (stock is 279x10x30.5):

12044140, 295.8 x 30.0 x 50.8
12044158, 328.0 x 28.0 x 49.0
12044168, 324.0 x 28.0 x 49.2

All of these (both front and rear) will require different calipers, but have the same bolt size, bolt pattern, hub size, and somewhat close height (backspacing). Research on calipers continues but will be much more difficult.
 

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Discussion Starter #5
I know I could probably source a used TRD kit, but for me it's all about finding something new. I know the xB absolutely doesn't need any kind of brake upgrade :)

Just trying to figure out the right caliper, plus making a custom bracket will almost certainly be required.
 

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Discussion Starter #7 (Edited)
2006-2011 Camry front brakes may actually be a direct bolt on swap for the front. I've done some basic photoshop overlays, but here's what you get:

Rotor diameter increases from 10.82" to 11.65" (not dramatic, I know)
Rotor thickness increases from 25mm to 28mm (again, nothing crazy)

Back spacing (hat height) may be off - not sure. Probably within 2-3mm. I'll investigate a bit; if it's off negatively I can just use some spacers and longer bolts for safety. If it's off positively, then there's no easy way (that I know of) around that..

Parts:
Rotor - Centric 12144146 (or 22744146L/22744146R for slotted and drilled)
Caliper - Centric 14244263/14244264

If I get crazy I may go "rent" a caliper and rotor from the local parts store and test fit them this weekend.
 

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Discussion Starter #8 (Edited)
One more front option:

2005 RX330 Disc (just over 12.5" diameter) and caliper. Need to check out spacing; this one (unlike the Camry one) will undoubtedly need a custom bracket/adapter.

This would be a billion times easier if anyone posted actual blueprints/dimensions for calipers online like they do for rotors.
 

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I have looked at my RX330, and see if the calipers and discs would work, but the caliper mounts on the spindles is different, I measured with a digital caliper and it's pretty far off. People have mention the back spacing of the Camry disc could cause rubbing issues. I have looked at Corollas, Matrix and RAV4s to see if certain models have compatible brakes. R1 concepts used to have great diagrams of measurements, but since they upgraded their website those diagrams aren't available any more. I've been doing crazy research too, even visiting junk yards and comparing.
 

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Discussion Starter #10
I seriously doubt the 2-3mm of spacing on the camry discs will cause issues since it's spacing inward (away from the wheel). I'll grab a set if one comes up at the salvage yard, but I have a hard time getting motivated about it since it's such a small upgrade.
 

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Discussion Starter #11 (Edited)
More progress. It looks like the camry brakes in question can be swapped for the Kluger/Highlander 328mm brakes, so they may fit the xB as well.... That's a freaking huge upgrade...

Cheap Big Brake upgrade - Toyota Nation Forum : Toyota Car and Truck Forums

Edit: maybe not, sounds like that might be gen5 only (not gen6)... oh well :(

Edit again, ok yes, does seem to apply to gen6 camry, which is the one I think it's potentially a match for the xB2
 

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Wanna test it for us?
 

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Discussion Starter #13
Not unless one comes up at a salvage yard; My automotive upgrade budget for the month was shot by the IS250/350 steering wheel swap. I don't know of anyone with a 07+ Highlander either, so nothing I can do right now :(

Just wanted to get this info out there, and I'll try to take a look when it's feasible.
 

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Discussion Starter #17 (Edited)
I'm still researching weight, but otherwise you gotta break it down and see if the highlander option is better:

Pros:


1. The TRD kit costs well over $1,000 new, and your $500 example is the cheapest I've ever seen it used. I can buy the highlander setup new for under $225 if I shop around, and far less if I'm willing to get used calipers and rebuild them.
2. Maintenance is expensive on the TRD brakes - replacement rotors are insane and replacement pads are far more expensive than the highlander option.
3. Replacement parts availablity is widespread (vs TRD which you are probably going to have to go to the dealer or an online seller for)
4. The TRD kit has drilled rotors, which I personally would never run on a street car.
5. The highlander brakes should fit under 17" wheels, but the TRD kit requires 19" wheels.

Cons:


1. The TRD rotors are slightly larger (340mm vs 328mm)
2. The TRD calipers are four piston vs two piston. Combined with the rotor size, I'm willing to bet the performance is slightly better than the higlander option.
3. To be fair, they look cool.


Granted we are still assuming the highlander brakes fit, but it looks promising.
 

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Discussion Starter #18
I did some research on weight. The highlander rotors are about 6.5lbs heavier each, though I don't think the calipers will be significantly heavier. Even if we budget a couple lbs for calipers on each side, that's still 17lbs total (8.5lbs per wheel) for a pretty big upgrade. This really comes down to the argument of whether big brake kits are worth doing in general. You're almost always going to run into these three issues:

1. Slightly reduced economy due to increased unsprung weight
2. Changes in overall brake bias (this isn't a huge issue for us, but on some cars is matters a lot)
3. Changes in pedal feel, though this is just more of a preference item.

I also did some interchange research, and this is what we're looking at for highlander brake compatibility/sources:

Rotors:

Toyota Highlander 2008+
Toyota Sienna 2011+
Lexus RX350 2010+
Lexus RX450H 2010+
(Some hybrids may not be applicable)

Calipers:

Toyota Highlander 2008+
Lexus RX350 2010+
Lexus RX450H 2010+
(Some hybrids may not be applicable)

This means that finding them at a salvage yard is pretty unlikely, since all of these parts are from 2008+ models (and Toyota models seem to be much rarer than others on salvage lots).
 

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Discussion Starter #19 (Edited)
Just making notes here - Centric part numbers for the highlander front upgrade (from the Toyota nation thread):

Caliper, Driver (rebuilt) = 141.44274
Caliper, Passenger (rebuilt) = 141.44273
Brake Disc Premium Rotor = 120.44158
Brake Pads, Posi-Quiet Ceramic w/ Shims & Hardware = 105.13240
 

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Discussion Starter #20
Also still looking into rear options, more for looks though to be honest (our rear brakes don't do **** - I have almost 75k on mine and the brake pads are almost new). I started chasing down some info about the Australian Mitsubish 380 based on a lead on the Toyota forum, but I haven't been able to find specs yet (and I'm not sure that there is any commonality between the Camry and xB rear, unlike the front).
 
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