[s-cars] Porsche Rotor Rings Warping

Sean Douglas quattro20v at telus.net
Tue Aug 8 11:44:01 EDT 2006


About 2 months ago, I installed 993tt front rotor rings with custom
aluminum hats to go along with the RS2 brackets and 993tt big blacks.

In the last month, I've noticed vibration under braking which leads me
to believe the rotors are warping and it getting steadily worse to the
point of the whole car shaking.

I'm going to pull them off this weekend and get them trued up on a
lathe, but doesn't this seem unusual given the short period of time? For
the record, I haven't done any high speed  / heavy braking runs.

As a comparison, the S8 one-piece rotors I had there before did not warp
at all, and they were on there for 12 months.

I will also check the torque on the small bolts - can someone remind me
of the torque specs? Was it 9 ft-lbs?

Thanks,

Sean Douglas

1997 S6



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