I just developed a strange noise, OK my car developed it. Kind of like a thumping and maybe some extra vibration, but only while coasting/de-accelerating. It seems to be coming from the front, but it is hard to know for sure. Also, it seems to be a little better if I hit the brakes. Also, it gets much worse above ~30 mph. If the power is on it is smooth and quiet up to ~60mph or so, have not tried faster as the slowing down is the hard part.

My first thought was a delaminating runflat or a CV joint, but after a cursory inspection all tires seem OK and the CV joints do not click while making a sharp slow turn. I have not crawled under yet for a good look.

It just started yesterday and seemed to be a little worse this morning on my way in to work.

I have a '06 JCW with only 12K miles.

Any Ideas?

 

Case closed, my 'favorite' dealer did not tighten the lug nuts on one wheel when I had it in for routine maintenance a few days ago. I guess the lugs took a few miles to work loose enough for the wheel to rattle.

It could always be worse, I could have lost a couple of lugs, or even the wheel itself.

So, not exactly the a tire, but real close.

 

Good Lord! That could have been disastrous.