Oversized brakes, rear disc conversion?

Does anyone out there know of any aftermarket oversized disc brake kits? I am running 20" KMC wheels with 285/50R20(s) and have noticed significant brake performance drop off. I am also wondering if anyone knows of a rear disc conversion kit.

2005 Pre-runner

 

You can't just slap on a disc conversion kit and assume it'll all work. There's a lot of other things to take into consideration, like master cylinder type & size, along with brake proportioning.

The master cylinder you have now - is a Disc/Drum master cylinder. To convert the rear to discs, you need a Disc/Disc master cylinder and probably a bigger bore along with a different proportioning valve (they are also different for disc or drum setups.

Sure - you could change to discs, but the only way you'll get better braking is if you change out the entire system with a matched master cylinder & proportioning valve to handle it.

 

I'd try better front brake pads.

 

S/S brake lines upgrade.. def my next move also

 

Thanks for the info. Will skip the disc conversion and start with upgraded shoes out back and upgraded rotors, calipers and pads up front.

 

Why don't you find a newer model FJ Cruiser in a junk yard and scavenge the master cylinder and rear assembly with discs? I wouldn't be surprised if many of the parts from the FJ bolted up to the Tacoma without to much fuss.

I've seen an X-Runner here in San Antonio with rear discs...looks nice but not sure about the performace or the process that they went through for the conversion.

Or just be happy with your drums. They look like they're from 1950 but are so far rather reliable.

 

TRD has a "Big Brake" kit for the Tacoma.

Link : http://trdparts4u.com/Scripts/prodView.asp?idproduct=276524

 

Won't fit anything other than the XRunner...

 

^^Thanks for pointing that out, guess I can stop thinking about buying that.

 

http://tundraracing.com/rbck.htm

Anyone have any experience with this kit? Says it works with the OE cylinder....

 

http://www.4wheeloffroad.com/techarticles/drivetrain/131_0708_4x4_disc_brakes/index.html

 

you can put them on any 5 lug tacoma...not just x runners

 

you guys can could just buy the TRD BBK for the FJs...FJs share the same lug pattern as 4x4 tacomas (6x5.5" lug pattern)

TRD BBK for FJ Cruisers <-click for link

this image below is for the XR (5 lug) this isn't the correct image...


if you have a TRD Offroad and/or tow package it comes with 4 piston caliper disc brakes...the TRD BBK is also a 4 piston caliper disc design...but has larger rotors and those rotors are drilled to help dissipate heat...

when I do my brake upgrade I'm going to switch to 6 piston caliper discs up front and 4 piston caliper discs in the rear...I'm still piecing together my kit it will be all Willwood...

if you want rear disk brakes find a FJ Cruiser that's in a junk yard...pull the disc brakes off the rear and you will only need to have some fabricate the mount for them...you will also need to change out the parking brake (e-brake) cable to work with this setup since we have drums from factory...

honestly I really don't get toyota some times...while they leave the tacoma with rear drums but upgrade to discs in the tundra, sequoia, 4runner, fj cruiser, and even the dinky puspus RAV4...when the tacoma sells more models then most of those combined...its a little retarded on their part...I understand that drums still work but they still aren't as good as discs IMHO...it wouldn't cost toyota much more since the fj shares the same rear dana as the tacoma...I wouldn't be surprised if the mounting brackets for the fj cruiser rear discs fit on the tacoma without any fitment issues...things like this make me want to kick toyota leads designer in the balls and tell him how's that for brakes...lol

 

The FJ TRD is 1.5" larger rotors... definantly better. My drums groan like crazy on steep decents (like 45 degrees or more) will rear disks stop that? Its really annoying. Or could I just use a different shoe compound?

Sorry for the semi hijack...

 

You are a regular Mona Lisa Vito

 

I spent weeks reading and researching about disc/drum conversions before converting to discs on my Jeep (trail rig). It greatly improved the braking on the jeep (for the trails).

But honestly, I'd never mess with that stuff on a daily driver. Stick with what was designed on your truck. As soon as you mess with that stuff - it just might not be there when you need it.