mark kibort

Anyone have any experience with these. My source has this new brand for the rotors I use . 964turbo '91. / 928GTS size but with holes.
I had some bad luck with the drilled rotors that were Porsche O.E., as I had great luck with the Zimmermans in the smaller size but using pagid orange pads.
The holes plus the greater diamter and use of pagid blacks vs the S4 rotors and oranges might be why the new OE rotors are failing after only 3 race weekends.

All racing use.

Thanks,

Mk

GlenL

Mark,

I've gotten Sebro and they were crap. They had some sort of surface problem that didn't go away until after a few DE sessions using Hawk Blues to hone them down.

I recall someone telling me they were low quality after I got them. There are a lot of companies that make rotors but it seems that it boils down to Zimmerman and all the rest.

mark kibort

same amount of holes?

mikew968

Mark:
Most of the guys I know do not use rotors with holes or even slots anymore. Why do you think you need them? I hear they all crack more rapidly then solids.

mark kibort

It just seemed like good Idea. Guess , after cracking the heck out of dozens of rotors, I should try the flat ones. I thought you would need the holes or slots for cooling and also for keeping the pad surface clean. sound like almost half of the racers here that voted, use flat rotors! Sounds like there is only downside with the drlled , very little upside.

mk

mikew968

I thought the reason for drill rotors was for "de-gassing" and with newer pad material that is not an issue. I'm sure there is a brake expert out there that can do this topic justice!!