333pg333

Ritter please report back your findings if you don't mind.

mark kibort

Go for the 965 cast hole big red equiv. rotors. I think they were only on the 94 turbo C2s. Is that what you are using?
Are they cracking at the holes? I think thats just a disavantage of the holes, no matter who the manufacturer is. I usually get a half and sometimes an entire season out of a set of rotors with the holes from Zimmerman. I wonder if the factory OEM stuff will last any better. Im going with the 322mm hole'd rotors for this season so we will see. I think the slotted crack too, but not as fast.

mk

Ritter v4.0

They are OEM 993 TT cast holed. I want to try just slotted and see if that makes a difference in terms of longevity. I know the AP's are terrific but the price is pretty dear. Still, may be cheaper to get one set of these then 3 x others.

Veloce Raptor

I know Giro Disk. They make excellent stuff for Ferraris, so I would expect their quality for Porsches to be just as good.

A930Rocket

I had a set of 993tt factory rotors cryoed and the difference vs non cryoed factory rotors was amazing. Same car, same track. Comparing the first 300 miles of track time on each, you could see a big difference. Non cryo rotors were starting to crack and heat check signifigantly. Cryoed rotor wear was neglible. Cryoed rotors are lasting much longer. It was about $35 per rotor IIRC.

Ritter v4.0

Do you need to do this with new rotors or will it retard the wear on used ones as well?

A930Rocket

I suppose it will work on used rotors, but new will make them last a long time. I had mine done at Cryo-rem in cumming, ga. Husband and wife team that were super nice, gave us a tour if the shop and the do all kinds of coatings as well.

TRAKCAR

Putting on the slotted front rotors from Pro-sport today for Winterfest at Sebring next weekend.
I paid $650.00 or so for the pair, but now they are $575.00. Seems like a deal and the seem to last verty good.

Rick DeMan

These are a great option...Rennlist price of $600.00 A PAIR!! Will outlast the factory rotors 3+ times over. Direct fit for 996 and 997 GT3 street cars and 996 GT3 Cup cars.

Ritter v4.0

Ya but not for 993 TT- yet??
Surely theres a bigger TT market than GT3, no?

Brinkley

Rick,
Let me know if you clear up the issues with the slotted base 996 rotors, ie not 996 GT3's. I was one of the original guys who got some of the "not so good ones".

va122

I have experience with Gyrodisc, and know the guys there very well, several Grand am teams have switched from PFC to Gyro for this year. They have been shown to work best with pagid blacks. And unlike PFC you retain your rear parking brake.