Izzone

I'll bet u a box of Cuban cigars the 991 cup is on pfc

Pfc has price increase in jan, call apex performance and order before u pay more

Peter and I don't share our stash

jp175

It does not matter what the car comes in. What matters is what teams continue to use.

Izzone

Hater

U just won't share cigars

jp175

I really don't have any left. I have eliminated smoking and adopted Erik's strategy of smoking only during track events.

TRD0524

There will be a lot of new compounds out from the other manufacturers that will change the brake game by the time the 991 Cup comes out. My sources are good.

85Gold

Mike

3175# M3 braking from 124 mph into turn 17 doesn't work brakes near as hard as a faster car. I run plain rotors from Centric and they last through 3 to 4 sets of pads. I guess I am easy on brakes.

Peter

GT3DE

After the demise of my PCCB's (12k miles, 3k street, 9k track in 1.5 years) and that I cannot find any lightly used replacement rotors... I am thinking of switching to steel. I have surmised the PFC is the way to go, 08 pads. As for the rotors I cannot determine which PFC rotor to go with. Slotted or dimpled. PFC rep told OGRacing that they are the same wear/performance, that it did not matter which.

Comment, please?

Mvez

PFC or AP steel rotors are the way to go. PFC dimpled or slotted are exact same performance. My AP front rotors came from Wrightwood Racing (or you can get them from TRG).

Go with a pad that gives plenty of modulation, this car needs it. Haven't tried 08's, but sound great. On/Off compounds like 01 are terrible for this car, IMO.

That said, my lightly used PCCB rotors are for sale...I'll never use them again.

Izzone

Only thing I do not like about the AP set up is that the bolts on the hat take the brake torque instead of the hat. Hat replacement is requires much more precision with this set up. Also isnot the AP a true floating?

The PFC set up the screws are just there to hold the hat together so can be re used, the hat takes the brake torque. There are small shims that if included make the rotor semi fixed from a true float on the street....so no rotor banging

Below is the AP correct?

According to PFC (I talked with them for a long long time at PRI, then came back and gave Reter teh readers digest) the dimpled is more of a street "designed" rotor. The dimples are quieter than the slots.

The slotted rotor is a race part (noiser on the street), it has a few percent higher initial brake torque than the dimpled

They both last the same time, when slots or dimples are gone the rotor is history.....they will have heat checking everywhere, but will not crack through.

if you get dimpled rotors rom PFC, they have a wide sweep area......be sure to buy the proper pad or you will cause a lip on the inside of the rotor....it may split there

SH || NC

Love my Girodisc setup, front and rear, slotted. I am going on ~12 events running PFC 06s and SRF. I think they have kits for the 7-3.1 & .2

Mvez

They offer full floating and 2-piece design. I have the 2-piece design, and they work perfectly fine. Hardware is cheap to replace and hat is re-useable for a long time. It's just a sandwhich, and doesn't require any additional precision to my knowledge.

I have full floating rotors on my M3 (stoptech) and to be honest, the pad knockback they give is sometimes pretty annoying. The slight performance difference between full floating and 2 piece design is negligible to anybody except full pro racers. The key is that they both help keep heat off the wheel bearings, dissipate it faster, and are lighter than stock.

PFC is the gold standard, but when I bought my car, these are what Armando had just installed, so I've stuck with it and they are fantastic. The value play is Girodisc at this point...$2400 for all 4 corners is a steal compared to PFC and AP.

Clark-ApexPerformance

Their are a few differences between the PFC slotted and dimpled rotors.
The dimpled P/N 379.34.0060.85/86 are considered "street" rotors by PFC. These rotors are 34MM thick and the swept area is 66MM. Should be used only with PFC pad # 0991. This pad is designed
to cover a swept area of 66MM. PFC does not reccommend using the 7819 pad (covers swept area of only 60MM) with the dimpled rotors.
The slotted rotors P/N 378.32.0060.45/46 are the real race deal. The slotted have a swept area of 60MM and are designed to used with the PFC 7819 pad.
Pros and Cons of each......the slotted weigh less but cost more and will not last as long as the dimpled.
We have a supply of PFC 7819 pads in stock in both 01 and 08 compound. Rotors either dimpled or slotted are available.
Shoot me a PM for pricing.

TRAKCAR

Thanks for posting Clark!

I am now running the dimpled 379.34.0060.85/86 rotors with the wrong 7819 pads in front.

I went through 2 sets of pads in front so far, about 8/10 track days each set and the rotors still look good. The rear pads last 15 days at least, almost 2:1.
If you put the insides out after 8/10 days you probably can make 2:1 and I have run these often with TC and SC ON!

On the dimpled front rotors I can see where there is some unswept area near the had creating a ridge that could crack because of the wrong pads (see pic), but the dimples are not worn down, I think I lost 1 mm of thickness on the rotor if that. I will put the slotted rotors on when I replace the pads next time. I think the rotors will last even longer, but because I have the wrong pads for these rotors, I will change them to the slotted rotors 378.32.0060.45/46

Definately sticking with PFC08 until they stop making them.

Mvez

Jeez, add some 08's to the list of crap I'm going to buy this offseason.

This is sorta off topic, but Hawk now makes both front and rear DTC60's for the GT3/RS. I personally didn't care for these pads on another car, but at half the price of Pagids, I feel obligated to let others know that these are now available. PM me and I'll pass along my contact for them.

TRAKCAR

We've run DTC70's for years on the Mustang. Less stopping power then other aggressive stuff we tried, but it stops the car enough and is easy on rotors and the pads lasted relatively long, someone could try them. They are cheap enough but I doubt they will be less then the PFC08 in terms of $$ per track day.