I have an 06 C4S with weird issue, dealer thinks it's normal. The car has 6000 miles.

IAt first I noticed a shudder when downshifting from 3rd to 2nd at speeds between 40 and 55mph, it's very pronounced, especially if i hold the shifter right above 2nd for a moment (with the clutch fully depressed obvously)... i also noticed it once or twice when coasting off an exit ramp and going from 6th to neutral (yes it shuddered in neutral)... it kinda sounds like when you drive over the ridged pavement on the side of the thruway that is supposed to inform you that you are going off the road!

After driving some more, i find that i can get it to do it regardless of the gear i shift out of, and it occurs while the shifter is in neutral... putting it into a gear will silence the shuddering.

My guess is something in the tranny is not letting go properly, but i'm no expert, i had hoped my greenwich CT dealer could help and they seem clueless.
Does anyone else think this is normal?

 

Your recourse after dealer intervention is unsatisfactory is to call 1800Porsche, and discuss the problem w regional management. Perhaps you can demonstrate this to a regional service rep. Good luck.