Exploding Rotors: why you do not drill

[JShadzi at aol.com]

I agree, like I've said before, this is a one in a million failure, every manufactured product has defects and failures, I seriously doubt that this rotor failed simply or only becuase it was drilled.  Zimmerman rotors are sold by tens of thousands of auto shops and part suppliers across the US not including the World, I'd think if there was a real problem that you'd hear more about it or that some action would be taken against them.

Like Taka says, all brake systems need to be checked periodically, especially under track driving where stock TT brakes are being very taxed and over-exserted.  It would be interesting to do a metalurgical analysis on these to see what happened to the metal.

Javad

>If they were Zimmermans, I wouldn't say it is commonplace for
>this to happen- I've had a few friends with Zimmerman drilled
>rotors and they have had no problems.
>
>There is obvious cracking- why didn't someone catch this during
>trackside tech?
>
>Taka
>
>