is the 199mm tundra brake upgrade be worth it?

[theizzardking]

I understand that there will be some loss in brake performance going to bigger wheels, but first of all, going from 31’s to 33’s won’t affect the braking that much. I noticed almost no difference going from 31’s to 32’s. Secondly, it will be almost a non-factor when comparing it to the weight of the vehicle. For example, take a 3,000lb rig with 33’s and 5,000lb rig with 29’s, both with same brakes, and tell me which stops better.

Also, I’m not saying that nobody should upgrade. There are some that NEED the upgrade. There are those that just WANT to upgrade. I just want those that want to upgrade to admit that they’re doing it out of want, not need. I’m still standing by my opinion that if you order some quality rotors and pads, break them in properly, you won’t have this issue of warping and brake fade.

And we're all cool here--friendly tone is assumed be default. :bluejump:

(glad we're on the same page ;-) )
well by your comparison the lighter vehicle with the bigger tires but that's not the right numbers your playing around with, the weight of the tundra is null,
it would look more like this
which would stop quicker between 2 trucks weighing the same a truck with 31's or a truck with 33's

the weight doesn't change as the weight of my truck will remain the same, the only thing that will change is the perpendicular distance to the axis of rotation which increase the amount of tq needed to stop rotation around the given axis.

and like your saying the difference maybe insignificant, but it's proven with larger tires you do loose braking ability, most manufactures recommend not going more then 3% above stock tire size or you may experience brake failure, which isn't much when your playing around with aspect ratios on tires and such, I'm not going todo the math to figure that out for our trucks but you can if you'd like, i just spend to much time @ work doing that sort of crap.

my advise to others on this is to do the math and figure out if this is really for you, i'm not going to second guess Toyota's engineers to much as they have done a pretty good job on our rigs and they get paid to figure all of this out.



just so you know i used all oem stuff from the dealer, not from flaps or anything of that sort, and to me spending the money to upgrade to drilled slotted rotors and carbon fiber brake pads doesn't seem worth it to me, would rather go with a larger caliper and thicker rotors and be done with it instead of experimenting with a myriad of products.


i have had warping since 1999 on this truck aot of you guys have not had this issue, so take that into consideration as well.

 

[p nut]

Ok, I guess then I misunderstood your statement that I quotes before. I thought you were saying the wheel weight was more of a factor than the vehicle weight itself.

Also, have you tried some good ceramic pads? I like the OEM rotors, but the pads are subpar, IMO. Hawk LTS or even Autozone Duralast ceramics work awesome for me. Another issue might be seized pistons. Which if that's the case, you'll have to get new calipers anyway, so might as well upgrade at that point.

And FYI, not to get into another major tangent, drilled/slotted do nothing for performance. Especially the cross drilled rotors. They're for looks only. Even Porsche admits this. Many of the major aftermarket brake companies do, too (Wilwood, Powerstop, etc). I just use the good ol' blanks on my truck and race cars.

 

[theizzardking]

Also, have you tried some good ceramic pads? I like the OEM rotors, but the pads are subpar, IMO. Hawk LTS or even Autozone Duralast ceramics work awesome for me.

yeah all the math in the world won't tell you that crap, lol

good to know, sounds like even when doing the upgrade i should get non-oem pads....

 

[004Gunner]

I plan on doing the 231mm upgrade in the near future. I think the 4Runner's brakes are adequate during normal use, but not when the vehicle is loaded down with gear or even a few other passengers. When I consider the towing capacities and after reading the owner's manual (has anyone done that yet?) I know the brakes are not good enough to handle the added weight.

BTW Justin, those are the same wheels I have so if I have any fitment issues I'll just blame it on you! :jk:

 

[Coltrabagar]

So, what year tundra calipers will work on my '98 4runner limited? I have 16" wheels so the 231's should fit fine. Just want to know what year Tundra's will work.

Thanks.

 

[nor cal boy]

well. i just had my truck in for recall service and toyota told me that the front brakes were in need of service. i said ok because they were bad. when i got back in my truck, i fealt no difference betwen the "bad" and new brakes. i even pulled the calipers and verified that they did put new pads on, and turned the rotors.

im doing the 231s soon.