Confused on Brake Upgrade
- Thread starter Drdave427
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BrianSD_42
New member
are you going to upgrade the rotors as well?
I upgraded my rotors to Brembo cross drill & slotted rotors; I also added performance pads. I didn't upgrade my calipers but I have the bigger ones since my 4Runner shipped with 16" Limited wheels.
You might want to consider putting Tundra or Brembo rotors on when you do the swap.
I upgraded my rotors to Brembo cross drill & slotted rotors; I also added performance pads. I didn't upgrade my calipers but I have the bigger ones since my 4Runner shipped with 16" Limited wheels.
You might want to consider putting Tundra or Brembo rotors on when you do the swap.
Tmansfield
New member
What about the FJ TRD wheel? Will they work with the tundra caliper upgrade?
Hey brianemc2_42, you upgraded your rotors and pads with Tundra ones and kept your stock calpers? Are there different calipers for the 4runner out there? I was sure all runners v6 with 16" wheels had the same ones.
Sorry to hijack this thread, if I am wrong please, administrators, move my post.
Thanks in advance to brianemc2_42 for answering...
Sorry to hijack this thread, if I am wrong please, administrators, move my post.
Thanks in advance to brianemc2_42 for answering...
BrianSD_42
New member
hmmm,
I don't have any tundra brake parts. I have the stock calipers with an after market non toyota rotor and pads. I don't know much about my calipers, I have a 97 limited and it shipped from factory with 16" wheels.
my current setup works so well I will not upgrade my calipers. I have brembo cross drilled and slotted rotors with a performance pads (can't rem. brand name).
when I brake with full force it stops great, the tires actually start shredding which I take to mean that the brakes are out performing my BFGs.
I specifically went with the high end rotors and pads because I figured the extra %20 is worth it and it def. was, they are AWESOME.
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Drdave427
New member
I got all Raybestos stuff -- New Tundra rotors and the 231 calipers and brakes
the great him
Elite Member
you have to use a tundra rotor, thats the who reason for the brake upgrade! to get a bigger rotor. the only reason for changing the calipers is our calipers wont fit over the tundra rotor. you will need the respective rotors for which ever calipers you use, you can not use a 231 caliper on a 199 rotor and vice versa. and cross drilled rotors are a waste! ask any one who races or knows about brakeing systems. drilling rotors takes away from the surface area, the less surface area the less heat build up(you want heat build up), the heat is what causes friction and friction is energy and how you stop your vehicle. you start taking that away and you are back where you started warping rotors or in your case cracking rotors. you want to be able to dissipate the heat, thats why we are going with a bigger thicker rotor to spread that heat out and be able to handle more of it. the only place i have ever seen drilled rotors be affective is in pure racing, such as Formula 1 or LeMans. those guys are going balls out for long periods of time- 24+hrs and are on and off the brakes constantly, and still use some asbestos or other gas producing chemicals. the other is WRC and they too are going balls out and then hard on the brakes, but they do a lot of water crossings, and none of these guys have time to sit and let there brakes cool or dry. also another thing to note is that especially with F1 and LeMans cars their rotors are like 17" in diameter... way more surface area that you could ever imagine. they look cool and thats about it
WHY Blank rotors are better than cross drilled and/or slotted - Honda-Tech
on a side note i have seen countless Porsche, Mercedes, and BMWs with drilled rotors that have cracked and or failed.
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the great him
Elite Member
it doesnt, cause both the tundra and the 4runner have ABS, and your arent replacing the sensors or ring. your abs will work just like it should
BrianSD_42
New member
I am pretty happy with my Brembo rotors. they have been on there for 35k and still have amazing stopping power. I saved money by reusing my stock calipers, swapping to the tundra would have been a lot more cash I presume.
however when I upgraded my brakes I did not even know about the tundra mod and did not compare the two. I did the brembo setup because it was recommendedto me by someone I trust. it has worked out great.
I see the benefits of the tundra upgrade as well, I would just recommend that people use toyota rotors and not some oem/off-brand rotors from CrapZone parts supply. I say this becausethe quality of steel and parts ingeneral has decreased noticibly IMO over the last few years; right now dealership parts are more the middle ground than a "premium" part. on the rotors the steel quality is pretty much ALL that matters and you get what you pay for.
.forgive spelling, sent from my Droid.
however when I upgraded my brakes I did not even know about the tundra mod and did not compare the two. I did the brembo setup because it was recommendedto me by someone I trust. it has worked out great.
I see the benefits of the tundra upgrade as well, I would just recommend that people use toyota rotors and not some oem/off-brand rotors from CrapZone parts supply. I say this becausethe quality of steel and parts ingeneral has decreased noticibly IMO over the last few years; right now dealership parts are more the middle ground than a "premium" part. on the rotors the steel quality is pretty much ALL that matters and you get what you pay for.
.forgive spelling, sent from my Droid.
Your increased braking performance is probably due to your pads and not your rotors. And I wouldn't write off all non-OEM rotors either.
Also important and not mentioned as often is to bed the pads/rotors per the manufacturer's instructions: Brake Tech - Brake Pad and Rotor Bed-In Procedures
BrianSD_42
New member
I appreciate the differences in rotor types and the different ways to seat them and break them in BUT I still contend that the quality of "average to mid level" steel products has decreased in recent years and advise people to stay away from the bottom-barrel parts, especially something like rotors.
You will get what you pay for! The cheap rotors at AutoZone are made from the cheapest steel in CHINA and despite being drilled or non-drilled, I think you will have issues with them.
I assume the pics of cracked rotors, are from cars that underwent extreme use (ie racing) or were just cheap rotors made with cheap steel. Those pictures (prev page) we not off of any 4Runner or Tundra btw.
It is just my opinion but I think that low quality steel and manufacturing is quickly becoming the NORM in America and it is a good idea to go with a higher quality rotor. I choose Brembo which is a *very* reputable brand; my 2nd choice would be doing the full Tundra upgrade with Toyota rotors.
:hello:
I believe that the holes actually increase the grip the pads have on the discs. To me it seems like basic physics, a smooth flat surface will have less resistance/grip.
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If the holes were to contribute to the friction, I think at most the gains would be negligible. F(friction) = F(clamp) x mu(brake pad-rotor), and if the holes were to provide extra friction, they would just be worn down along with he rest of the rotor. That said, the brake pad will have a larger influence vs. the rotor.
As for the quality of steel, does anyone know which manufacturers Toyota uses for their rotors?
BrianSD_42
New member
I believe Toyota uses varying manufactures depending on the year. You should be able to find out who their manufacturer is for Tundra rotors for 2011 but it might be different next year.
Socco
New member
So just how does a lack of material increase friction?? The holes are actually there to vent heat and gas build-up between the pad and rotor surface.
