Brembo BBK - Replacement Rotor Rings

[WestBankM4]

Thought I would ask here before putting in my final order for replacement rotor rings. I'll be using my car primarily as a street car with a lot of spirited driving but also having the ability to hit local tracks a couple times throughout the year.

Front: 355mm x 32
Rear: 345mm x 28

I've seen the Brembo replacement discs, Type 1, 2, and 3 online and from what I've read they tend to last quite a few years, or a good amount of track days before needing replacing. GiroDisc's has also released their slotted versions of both sizes at drastically reduced price. My question is when it comes to quality and longevity, is it worth spending the extra money and going with the Brembo's or shave costs down and opt for the GiroDisc's or StopTechs? Some Corvette guy I was speaking with had mentioned he had opted for the StopTech replacement rings and was disappointed, especially on the track. Apparently there are less vanes, 72 (Brembo) vs 36 (StopTech) creating more fade sooner, the metal quality of the blanks may not be up to par, had to replace them more often, etc. This was from one guys perspective and he was on the track with his car a lot of the time.

To be fair, the GiroDisc's are about $700/pair, while the Brembo's will run me about ~$1145/pair. Should I stick with the Brembo's considering my car will mainly be for street/spirited driving? Probably overkill with the 6-pot and 4-pots on the rear but if you're going to do something, do it big. Thoughts?

[jbfrancis3]

Sent you a PM.

[Wernd]

I'm curious on this info as well. I'm just doing the comp brake system now from FCP but have noticed the braking isn't always predictable. It's nice being able to send rotors back but I'd also like to know exactly what I'm going to get the second I hit the brakes. I'm just wondering how many track days a set of rings last and what the cost to replace them would be

[Sharocks]

I'm on a set of toasted Type V rotors from Brembo for my GTR kit.

I am going with Girodisc this time.

[WestBankM4]

I'm on a set of toasted Type V rotors from Brembo for my GTR kit.

I am going with Girodisc this time.

I was looking at the GiroDisc's too, I remember the thread from member R4DR on these boards. The price is definitely right, have you gotten any feedback regarding the GiroDiscs from other members?

How long did your Type-V rotors last and what kind of driving were you doing?

[Sharocks]

I was looking at the GiroDisc's too, I remember the thread from member R4DR on these boards. The price is definitely right, have you gotten any feedback regarding the GiroDiscs from other members?

How long did your Type-V rotors last and what kind of driving were you doing?

I know my friends that track GTR's and Porsches swear by them.

The Type V's lasted about 7k miles. All street driving.

Only went with them because the slotted ones were backordered and I needed rotors ASAP.

Will not make that mistake again. Very costly haha

[Feffman]

WestBankM4, I currently run the Girodisc on my M3 race car. They are very well done and US made to boot. Another good option is Zeckenhausen Racing in New Jersey.

Feff

[WestBankM4]

WestBankM4, I currently run the Girodisc on my M3 race car. They are very well done and US made to boot. Another good option is Zeckenhausen Racing in New Jersey.

Feff

Thank you for the feedback on those Feff, I do like how they're manufactured here in the good 'ole USA. I would support them for that reason alone but any feedback regarding the longevity of the discs, I understand your M3 is a race car but some kind of perspective.

[Feffman]

Thank you for the feedback on those Feff, I do like how they're manufactured here in the good 'ole USA. I would support them for that reason alone but any feedback regarding the longevity of the discs, I understand your M3 is a race car but some kind of perspective.

I'm not sure about how often I've swapped them out. Likely 2-4 seasons, but that's also brake pad dependent. I use slotted, not cross drilled.

Feff

[Slideways]

Thank you for the feedback on those Feff, I do like how they're manufactured here in the good 'ole USA. I would support them for that reason alone but any feedback regarding the longevity of the discs, I understand your M3 is a race car but some kind of perspective.

To get the brake pads and discs to last longer (even for OE brakes) mainly for track use, a brake duct cooling system is required. For street use, the Stoptech 355 rotors hold up well and I'd imagine same goes for the Girodisc.

[WestBankM4]

Thank you boys, I've made my decision and placed my order for the GiroDisc's front and rear. I've spent over $4,000 for hats and rotors only, these better last a couple of seasons!

[Obioban]

The stoptech rotors are crap.

I got 6 years of tracking/DDing out of my first set of Brembo rotors. Wore them out (admittedly well beyond spec, but they weren't cracking) and replaced them with stoptech rotors. Used up within a single year. Went back to Brembo rotors, and got several more years of use out of them (still good when I converted the car to 996 brakes).

[liam821]

The stoptech rotors are crap.

I got 6 years of tracking/DDing out of my first set of Brembo rotors. Wore them out (admittedly well beyond spec, but they weren't cracking) and replaced them with stoptech rotors. Used up within a single year. Went back to Brembo rotors, and got several more use out of them (still good when I converted the car to 996 brakes).

I've also heard the same thing. With that said, I had a set of 355mm Stoptechs rings on my old e46m3 with Brembo GTs and they worked fine on the street, I never tracked it like Obioban though.

Another option is Coleman Racing, they make all sorts of rotors. You would probably have to contact them as I can't seem to find the correct rotor on their website but I'd imagine they have them. https://www.colemanracing.com/Brakes/Brake-Rotors And I'm betting they'll come in at under $600 for the pair.

[wahsm]

The stoptech rotors are crap.

I got 6 years of tracking/DDing out of my first set of Brembo rotors. Wore them out (admittedly well beyond spec, but they weren't cracking) and replaced them with stoptech rotors. Used up within a single year. Went back to Brembo rotors, and got several more years of use out of them (still good when I converted the car to 996 brakes).

I've had similar issues with various stoptech components. Went through 2 sets of rotors way too quickly, called them up just to get some advice. I guess when I asked if they were meant to stand up to track use it triggered something on the other end and the guy basically hung up on me. I was just trying to have a regular convo with the guy. Great customer service, after that point vowed to never buy stoptech again. Wasn't the first issue I had with stoptech components, but it was certainly the last. I would stay away from stoptech. Some swear by it, but every time I have tried to go stoptech I was convinced they are pushing some crappy components. Some get lucky, but that has been far from my experience.

[Speed Monkey]

About buying just the rotors, I contacted Tire Rack and happen to reach just the right sales person and he was able to look into their parts catalog for the right replacement rotors. Another member mentioned Zeckenhausen; I’ve purchased from his shop once. It was a good all around experience. The StopTech rotors and Ferodo DS-3000 F+R pads sourced from him all worked great. I personally like the DS-3000 endurance pads better than the Porterfiend R4-S pads I had previously, and I’m a Porterfield fan. From Porterfield though, I could have stepped up to the next higher friction compound, which I think would have been the R4-E, but I wanted to try something different in the Ferodo pads. Last thing, don’t be a cheap monkey like me and use a little hand held vacuum pump to bleed the calipers; spring for the big pressurized hand pump bottle that remotely connects to the reservoir cap if you don’t have a helper. Call me crazy, I usually use Motul 550 or 600 but I seem to remember using some Wilwood high temp brake fluid and seem to remember the pedal felt harder with the Motul after using both - placebo or perhaps I did a bad job on bleeding the brakes, maybe…. 🤔