My front flex disc, on my extremely low mileage 560 SEC, just grenaded last night. There are chunks of rubber, and Nylon string coming out of the U-Joint, and it did a small amount of damage to the undercarriage insulation, but none to anything else (luckily). Was told today that in some cases these things will go bad, and send the driveshaft through the floor into the cabin. Now, I'm putting a new pair on the car, front and rear.
I cannot be totally sure, but I have a feeling it's only a result of my heavy foot, and not really due very much to wear. The car barely has any miles on it, though it's 17 years old. It sat for a long time, and the original tires were dry-rotted when I got it, so to say it could have also been dry-rotted, is not totally out of the question either.

Nick

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