Funny noise

Hello, Just bought a 2000 clk320 rag top. while moving i hear a low pitch "moan" underneath. It stays very constant and i want to know if it is normal.
Thanks for the help.

it sounds like it could be a tire noise. if you have the same size tires on the front and rear you should try rotating them.

The CLK won't have the same tire size front and rear so rotating isn't an option. Could you be more descriptive in the noise....speed/RPM range...things like that.

it is only a 320 so it will have the same tires if they are the stock size.

^^^

True. My mistake.