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I've know about those brakes for awhile now. To me they look like they will only fit on a car with 17 or 18 in ch wheels though. The size of rotor is at least 13" if not 14" in diameter.

They are too expensive to buy even used to try a fit on the car IF you aren't prepared to do other modifications.

I would try to see if they would fit IF I could borrow a set.

There are quite a few sets for sale on ebay used.
Doug,

If I'm not mistaken, the rotors and calipers in the Movit kit are from a 993 C4S/Turbo (1995 to 1998). The front rotors have a separate hat and rotor but the rears are conventional one piece rotors. Of course, to mount them on a Pantera you'd need to drill them in the Pantera's bolt pattern. These cars came with 17" wheels, so that would be sufficient if someone wanted to use these rotors on a Pantera.

The only thing that's remarkable about these rotors is, they do not seem to develop the hairline cracks around the cross-drilled holes that aftermarket cross-drilled rotors often do. I drove a 993 C4S as my daily driver for years and never found a single crack.
Last edited by davidnunn
I'm not totally sure but indications are that the cross-holes in genuine Porsche ventilated rotors are not drilled but cast-in-place during the forming of the rotor. If so, this would completely remove any burrs left on the inside of 'regular' drilled rotors, where its impossible to deburr and where some believe stress-riser cracks may start.

And of course, drilled rotors on cars NOT used for regular, hard-driven track events probably won't crack. As was once said, if you don't really drive your car hard enough to justify drilled rotors, they will probably be fine....
Rotors soundn't be drilled, they need to machined with a ball mill. Nowadays the pattern is just set in a CAD program and machined automatically on a mill.

Actually the motorcycle guys say they have been using "cross drilled" rotors for years and they say they never crack.

It's also the location of the vent in relationship to the internal reinforcements for venting the rotor. You don't want to bore through a support wall.

Incidentally, it isn't just cross drilled rotors that fail. That can be an issue with just a plain vented rotor under high stress conditions.

For a long time, the old timers would only used solid rotors.

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