mark kibort

new oem rotors, maybe zimmerman.
pagid orange or mintex

brake harder for less time

you should be good to go. those are small pads, but i actually raced a 928 '79 with the same size mitex pads and slotted rotors and it worked well. not great, but good.

stock pads and some old rotors, wont do the trick, as you have seen.
MK

CCCP

Thanks for all the insight guys. Today I ordered zimmerman unslotted / undrilled rotors and KFP gold pads from paragon. Only concern now is wherther or not my calipers are sticking some.

TD in DC

This is one of the many counter-intuitive insights I have learned from the track. It makes complete sense once it is explained to you, but most would never guess this.

FWIW, I understand that reverse braking is also brutal on your brakes.

Z-man

I would stick with the OEM rotors. From what I understand, they are built to higher standards than Zimmerman, even though Zimmerman actually makes the Porsche rotors.

-Z.

mark kibort

I dont know, but ive put about 10 sets of zimmermans through some of the toughest conditions and they have worked incredibly well. 7 WC races, 100club race, etc. Zimmermans sure look great, right up to the point where they start to show cracking. but keep i mind, ill dust a set of pagid oranges in a couple of weekends with only 2 races and 2 each quals.

I think the pads are key two, and cooling, as well as driving style. I think you really need the slotted rotors if you are doing some track events.. drilled work too, but they crack earlier if you are really punishing them.

i used mintex for more street use, and pagid oranges for the racing. but, they are awesome on the street. rarely do they squeal, unless they get real real hot.

Mk

mikew968

I would run zimmerman rotors from paragon and I like the performance friction 097 pads that I use on my 968. They have been great.


Mike

JasonAndreas

Otto Zimmermann Gmbh ARE NOT an OE brake disc supplier to Porsche. SHW Automotive has had an exclusive contract with PAG since 1996 and before that the supplier was ATE (since the 356 days) and Brembo. What is most likely the situation is that some aftermarket parts supplier took Zimmermann's adcopy "OEM Compatible" and assumed they were the supplier. If Zimmermann ever was an OE supplier to Porsche it was in the eighties, if at all.

The Porsche discs are made from a cast-iron alloy called Luperlit.

Bonus points to anyone that can tell me the name of the aluminum alloy that the G50.05 transmission is cast in.

Oddjob

Nope cant answer that, but to add to the Porsche OE vs Zimmerman discussion:

Several years ago, I bought a set of 928S4 rotors (for my 944TS) from an aftermarket supplier; when they showed up, one was a Zimmerman rotor, the other was Porsche OE. Used the car for DEs, and the Zimmerman rotor stress/heat cracked much sooner and much more severe than the Porsche rotor. By the time the Zimmerman cracked thru, the Porsche rotor was still in ok condition and had a lot of life left. Very literal side by side test. Spoke to Bill Groschen (of Diversified Cryogenics) at the time, and he also agreed that they had found that Porsche rotors were a higher quality than the Zimmerman rotors.

I have not used Zimmermans since then (this was about 7-8 years ago), so I cannot say if the current made Zimmermans are any different with respect to current made Porsche rotors.

Z-man

Ok - I'll buy that. Either way, I still think the Porsche OEM rotors are the best ones out there for our cars. A few years back, I attended a DE at VIR, and the rotors were just below the recommended thickness. Did not have a problem with warping, cracking, brake fade whatsoever. I've also had my rotors last twice as long as my mechanic expected them to last, based on other rotor life he's seen in similar cars. Then again, brake management has a lot to do with that as well...

-Z.

Jimbo951

That's because you're slower than other "similar cars".

I can't believe your post has been up here for 8 hours and neither 38D nor Bull has responded.

- Jim, #177

Bull

1. I'm busy.

2. I try to leave the layups for 38D...he needs the help!

Z-man

Actually, if my rotors last twice as long, that must mean I'm using the brakes less.

Freakin' 944 turbo drivers....
-Z.