I have a strange problem with my 05 cooper s. Since the weather has gotten cold I have a strange knocking/clunking under the front passanger side of my car. But here is the strange part!!! It goes away when the car worms up, after the first 15 min or so the noise is 98% gone?? Only thing I have changed lately is I added a TSW motor mount. Any sugestions would be a great help.
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Is your oil level ok?

 

yes the oil is ok its under the car, Im starting to think its a exhaust thing

 

i have an 07 should i check my oil level also?

 

remove the motor mount and see if the noise goes away. if not, keep testing.

 

tried removing the motor mount noise was still there, it was in the 50's here in boston yesterday{no noise!} I am putting on my snows this weekend I will check the exhaust this is my guess where I will find the noise.

 

Update!!!! so I take my snows to my wifes uncle who has his own shop and was trained in germany to install them on my steel wheels and I tell him the story about the noise, right away he says control arm bushing! So I go back to the house install the new Gislavard snows, check the exhaust seems fine.I can't tell though if there is a problem with the control arm bushing. Anyone have any tips on how to test them to see if there bad!!

 

Could be, but did he visually inspect the control arm bushing?

I think that diagnostic makes sense. But why the knocking goes away as soon as the car warms up?

 

He said once the car warms up and you drive the car, heat and friction warm and swell the rubber making the noise go away?

 

Sprayed the bushing down with wurth rubber care seemed to help!!!!!

 

Update!!! one of my good freinds just got a job at the Dealer in Peabody MA. He just had a car come in with the same noise!!! Inner ball joint! Changed FIXED!!!!!!