shelleys_man_06

Does anyone have any experience with Stoptech's RX-8 slotted brake discs? I'm talking about the direct replacement, not the BBK. I like the price per rotor as written by the company.

brillo

stoptech makes so good stuff, I saw a bunch of people out at Texas World Speedway with there full on kits. Why are you looking to switch? Our brakes, other than the dust are quite good, I think perofrmance wise a nice need set of performance pads, and some motul fluid will give you more bang for your buck, unless your going for looks.

Keep in mind that slotted and cross drilled rotors can't be resurfaced, so you'll only get about 30K out of them here in Houston

PUR NRG

Near as I can tell those are the same rotors that Rotora sells for our car. Chances are both companies are selling something made by another company.
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BRUNETTE MILF

AlexCisneros

I didn't know ST had an OEM replacement already... I wonder what the weight is compared to the stock discs.

Docofmind

Check the RX8Store, all the rotors are already available at a much better price.

Rotors will weight the same as stock as they are just stock replacements. Also, these can be resurfaced, whoever said they couldnt, is mistaken.

PUR NRG

We have a new winner. $350 for a full set is significantly better than what I found a month ago. And yes these sound like the same ones StopTech and Rotora sell.
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YAMAHA WIKI

Dark8

Where are we getting this info from? A link please? Application for the RX-8 is available from ST?

Docofmind

Here is a link for you. Both Sport package and non Sport package applications available.

Upgraded Brake Rotors

shelleys_man_06

I'll side with brillo on this one.

The brake rotors are as big as they can get. I don't want to increase the unsprung weight of the car by adding larger brakes. I'll probably just switch brake pads for something a bit more aggressive.

Heh. I forgot I even made this thread. PDE racked my brain.

This thread is still open to suggestions. If anyone has reviews on these brake rotors, please feel free to share.

Kel Rx8

its states croos drilled and slotted available ?
great price for direct replacement

mspeed11

i have the sloted rotors from mazdatrix.....i think they are made by "raceing brakes" man dob they work good with the kev pads! and if you really need to come off 100mph and then agin in the next few min......they work even better the second time:D the steel lines help the pedal feel too.......if you do it ......do it right. get all three componints!

Docofmind

Do not be mislead, bigger is not always heavier, and we have proven that. Our big brake kit sheds 26 pounds of unsprung weight off the front end of the car all while using much larger and beefier components. Each forged 4 piston caliper is 10 pounds lighter and each rotor is 3 pounds lighter. 3 pounds of rotating mass!!! All while being larger in overall diameter and much thicker than stock too. Directionally vaned to boot

PUR NRG

I can also say do not be mislead, lighter is not always better. Sure you reduce overall rotating weight but if more of it is further away from the center then it takes more energy to spin it up. Net result is loss of HP as measured at the wheels.

A perfect example of this is StopTech's kit on an RSX. It reduced rotating mass (primarily in the hat) but due to the larger rotor they found 7 less HP on a DynoJet.

StopTech will be one of the first to tell you a big brake kit's primary purpose is to give consistent repeated stops without brake fade. Most OEM brakes can't do that. RX-8's are one of the few that can.
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Kitchen Measures

shelleys_man_06

I want to be as practical as possible, by upgrading areas to which I see are weak points. That is true modification.

mspeed11

well if your actuly looking you would see that the stock brakes with the exeption of the calipers are weak! how do i know.........25,000 miles and the rotors worped like an old wooden fince.

PUR NRG

You "know" this from a sample size of what? One? Do you consider that a statistically valid pool to measure from? Should we infer that whatever happens to you is likely to happen to everyone else?

I had 25,000 miles, 30+ autocross events and one track day at Laguna Seca with no rotor warpage.
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ShyLorelai

mspeed11

mayde i drive a little harder than you? iv ben to three drift events and im not the best in the world so yes sometimes they wer a little punished. and why would an autoX warp a rotor. i think you need speeds over 40mph to really get them hot. but never the less im so very proud of your ability to prolong wear :D

PUR NRG

How does a drift event punish rotors?
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Honda SMX

Docofmind

Its funny, a lot of people dont realize how much braking IS involved in braking. Except in drifting, its different than a road race situation.

Overheating is not the real issue in drifting, pedal modulation and feel is what is critical. They def do use the brakes though

PUR NRG

Docofmind, I never claimed drifting doesn't use brakes--especially a quick yank of the e-brake (which you don't do in any other kind of driving). It's the "punish rotors" part that I'm unaware of. Hence my request for clarification.

Meanwhile mspeed11 seems to think autocross doesn't go faster than 40mph. He may also be unaware that uneven pad deposition is the most common cause of what people perceive as rotor warpage but we won't go there.

Oh, another data point: murix has attended at least three track events that I know about, all on OEM rotors without problems.
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VIDEO SEX

Rotary Rasp

iTrader: (2)

This kit from http://www.rx8store.com/product.asp?0=557&1=645&3=331 it says under it that they make them in cross drilled/slotted also... how can we get those?

xeony2k

Not trying to argue, but since we are talking brakes.... there are many scenarios that will warp rotors. In direct relation to this thread, any time you remove your wheels it is never a bad idea to use a torque wrench to get within the proper torque specs and uniform tightness all the way around. I.E. if you are painting caliper/hubs, installing new discs or whatever... torque wrench.

Red Devil

Doesn't Speedsource use the OEM calipers and rotors on their Grand AM cars?

If that's good enough for their applications, that's good enough for me. Just need SS lines and some new pads.

ranger4277

For what it is worth... I think at least one of my front rotors is warped. No abuse here.

black-rx8-msbodykit

iTrader: (-1)

so i have the rotora big brake kit for the front. and i heard people saying drill/slot rotor will crack, i was wondering is anyone know how long until my rotor will be cracked, and can i fix it if it crack. i sped a lot money on the bbk i don't want to toss it away and buy another one.

Here is the picure of my bbk on my car:

https://www.rx8club.com/series-i-wheels-tires-brakes-suspension-55/my-big-brake-kit-55496/