Tundra Brake Upgrade, info needed

[Dmart_808]

here

http://www.toyota-4runner.org/3rd-g...ements-231mm-13wl-tundra-calipers-rotors.html

 

[zcruiser]

the metal is thicker

Correct. Tundra rotors are thicker.

the surface area is larger,

Incorrect. Tundra rotors are the same diameter as stock T4R.

the calipers have larger pistons to spread the clamp force over a larger surface area, and more evenly.,

Correct. Tundra calipers are larger, which gives more clamping force. This is why they won't fit under some wheels.

Better performance of the Tundra brakes has nothing to do with the diameter of the rotors.

 

[CanukRunner]

Im doing the conversion this week my passenger front wheel cannot be turned by hand.

I had a few questions too.. I have read every thread on the matter over the last year...

Just to double check...

Has anyone done the combination with the stock limited 5 spoke rims and had to grind them for the 231's?? (pic included of my wheels)

Is there really any difference (other than the increased heatsink ability ) from the 199 to 231's? (There is something to be said about being able to use the 6 spokes that came with the truck as spares.)

Will the increased piston displacment cause any issues with our master cylinder or abs system??.

CAD Prices for project...

2005 tundra 13wl semi loaded a1 -cardone caliper $180 - 80 core = 100 (if im lucky..lol) x2
Rotor premium $46x2
Pad ceramic $36
Total $328x1.13 =$370 with good ol canadian taxes.. our navy canoes need repairs. ( I told them birchwood wouldn't stop bullets)

PS so far i like these new tires and rims .. but no real snow to test them in yet. I decided to go with the Goodyears after all my reasearch pointed to the bfg's being the best tire because.... they just looked better..lol...and had sipes.

 

[tbst]

I got good rotors, calipers with pads for $100 from a scrap yard. Replaced the pads, but they were still good. You should look into it.

 

[Nelsonmd]

Im doing the conversion this week my passenger front wheel cannot be turned by hand.

I had a few questions too.. I have read every thread on the matter over the last year...

Just to double check...

Has anyone done the combination with the stock limited 5 spoke rims and had to grind them for the 231's?? (pic included of my wheels)

The 5-spokes should clear the 231's and the 199's, no grinding needed.

Is there really any difference (other than the increased heatsink ability ) from the 199 to 231's? (There is something to be said about being able to use the 6 spokes that came with the truck as spares.)

Bigger is better when heat dissipation affects performance, like in brakes.

Will the increased piston displacment cause any issues with our master cylinder or abs system??.

Lots of comments on this if you search. People report softer pedal, but better braking power. ABS still works.

 

[the great him]

Lots of comments on this if you search. People report softer pedal, but better braking power. ABS still works.

for what its worth i did not notice any difference in pedal feel, maybe their was but nothing more than driving a different car, meaning if you have two different vehicles the pedal feel will most likely be a slight bit different... anyhow if there was a difference i didnt notice it and dont today.

on a side not i took my runner out to the EVOC course and ran it around with some crown vics and a charger, i was able to stop just as fast as the crown vics and almost as fast as the charger. and they all experienced brake fade before i did(both under the same braking situations). the 231s are amazing and well worth the money. you can use your old calipers for cores, i did, and i know other guys on here have too.

 

[zcruiser]

Is there really any difference (other than the increased heatsink ability ) from the 199 to 231's? (There is something to be said about being able to use the 6 spokes that came with the truck as spares.)

My guess... the 231's have a larger pad size than the 199's. If true, then the stopping power is because of the larger contact area of the brake pads. The improved heatsink capability doesn't come from the caliper, it comes from the thicker Tundra rotor, which is the same rotor regardless of the caliper size.

 

[BigFishAllDay]

My guess... the 231's have a larger pad size than the 199's. If true, then the stopping power is because of the larger contact area of the brake pads. The improved heatsink capability doesn't come from the caliper, it comes from the thicker Tundra rotor, which is the same rotor regardless of the caliper size.

Exactly... the 199mm/231mm spec on the calipers refers strictly to the size of the pads that they hold, and the cavity where the pads sit in the caliper.

ALL of the information being discussed in this thread, and all the questions being asked, have been discussed & answered in the thread I made on the 231 Tundra Brake Upgrade.

Dmart 808 posted the link above. But you guys are welcome to rehash the same discussion all over again here. Carry on.

 

[the great him]

Exactly... the 199mm/231mm spec on the calipers refers strictly to the size of the pads that they hold, and the cavity where the pads sit in the caliper.

ALL of the information being discussed in this thread, and all the questions being asked, have been discussed & answered in the thread I made on the 231 Tundra Brake Upgrade.

Dmart 808 posted the link above. But you guys are welcome to rehash the same discussion all over again here. Carry on.

beating dead horses is fun!

 

[xskydivingdudex]

Figured id ask bc im not too sure but if i have some rotors from a sequoia that are in this condition are they usable? i assume i would need to get them resurfaced?

Yes

 

[the great him]

^^^ the only way to tell is to measure them