Goldenhue22

Wondering how much it would cost to replace the standard brakes with Brembo's. I know there are a lot of variables but does anyone know a ballpark price? Thanks in advance.

M-ster

I did check out teh Brembo's site, but couldn't see any kit for the 8 yet. I think if one were to take the whole package of the Brembo rotor + caliper, it should be around 2k+. and if it's just rotor price should be around $400+.

mikeb

stoptech has a kit out now
its in the vivid thread

M-ster

Here a pix of the GranTurismo Brake System. Drooling

rabinabo

Don't forget possibly needing new wheels with your bigger brakes...

Brian Goodwin

I am just back from the SEMA show today. I talked with the owner of a certain company that had an RX8 in its display with the Stoptech kit and he reported that it did not work as well as the stock brakes in his opinion and that he had talked with Stoptech and that they were still working on this kit. So, sounds like this one may need a little more time on the vine.

The good news is that there were several RX8s at the show with brake kits. A rotora kit, a project nu kit, and two others I can't recall at this moment. I understand an AP Racing kit is also in development. Therefore, in time a number of options should shake out... The project Nu kit was gorgeous but I am sure it will be BIG bucks and it did require 19 inch wheels.

brothervoodoo

Good info Brian, that is correct the stock breaks have excellent braking properties already and more than compete against other models that already have brembo's and such. Changing brakes/calipers seems to be an aesthetic thing as opposed to actually getting any additional performance. I'm not going to spend money making my car perform less just because I think something else "looks cool". I'd wait.

Goldenhue22

Thanks for the responses. Waiting would be best. I'm gonna wait until after winter for whatever mods I make and hopefully that will be plenty of time to get things rolling on the distribution line.

chinx

wow didn't work as well as stock ones. that's awesome. the stock RX-8 brakes 60-0 in 114 feet; that's BETTER than an 911 turbo, nearly on par w/ M3, and just 4 feet shy of the 360 modena. the stock braks are pretty darn good? awesome. so yeah exactly, changing brakes would be an anesthetics thing

rabinabo

Someone complained about brake fade which would only affect prolonged, intense use. Maybe better brake pade would fix this though.

Sputnik

If a brake system can't release enough heat quick enough, "hotter" pads won't make things better. In fact, sometimes they can make things worse.

I wonder if the Stoptech system that doesn't work well is a front-only setup, which would throw the balance of and decrease overall braking performance.

---jps

Brian Goodwin

I agree it may very well be a balance issue. We currently make a Miata four wheel brake setup because all the front-only setups for the Miata perform WORSE than stock because the balance is messed up when a big front only setup is installed. Not real surprised to hear of a similar result on the RX8. Folks try and fix those front-only kits with a proportioning valve addition but obviously the right way to do it is to make a balanced kit.

Nonetheless, I do NOT think a brake kit for the RX8 is necessaily just about aesthetics....because that stock setup is HEAVY.

Therefore, I am very keen to see one done right. I don't feel like undertaking the project myself as there are enough companies working on it. Assuming we discover on track days that we have enough thermal capacity in the stock setup then my preference would be to use an OEM sized brake kit to lower unsprung weight significantly. If thermal capacity is not an issue, then stock size two piece rotors all around should be good for saving perhaps 2-3 pounds per corner and a proper four wheel caliper kit should be good for perhaps five pounds in the front corners and 3 to 4 in the rear. Add all that up and we could shed a good 20 pounds of unsprung weight.....well worth it to me if the setup is done right. Of the kits I saw at SEMA, only the Project Nu was a four wheel solution involving alloy hats at all four corners. I talked with some rotor makers and it looks like some cool two piece OEM size rotors could be ready a few months into the new year. Otherwise I will get impatient and make some myself since we have the CNC equipment to do it.

Brian Goodwin
Good-Win Racing

syntrix

Now that's odd.

There are a lot of other cars that I've ran hot on the same track here in Vegas. They all had a bit of fade after a few laps.

I ran the 8 two full days already. 0 brake fade! 100% stock setup except for tires

pullinteef

hehe, not making fun of you, I just thought your typo was funny. I suppose good brakes are an anesthetic in that they prevent you from feeling the pain of impact with another object.

Goldenhue22

Mazdatrix has the brembo line of brakes to be available soon on their webpage. THe calipers are not painted though, just silver with brembo's name on the outside.