Originally Posted by oledoc2u
I don't know if this is what you are hearing, but you will have a lot more road noise from the roadster than the coupe...glad you found the spacers....and it does sound like an intercooler leak, hope not, but it could be if you aren't finding any leaks. How many miles are on ther roadster?
I don't think it is Soft Top related noise. I'll try the mid bearing first. Now that the unbalance wobble from the rear is gone, it sounds like it's coming more from the drive shaft tunnel.
It has an extended warrentee so I will see if the dealer will fix the leak. I'm pretty certain about the IC after searching common symptoms on Mercedes supercharged 3.2 engines. 48K on the car.