fantastic car but...

[x2x5]

First Post. Excellent forum which helped persuade me to get car.

Just got a 2007 X5 3.0D. Fantastic car had to drive 480 miles of mixed country / highway roads today and what with sat nav, HUD, and general car capabilities not even stiff or tired.

Have noticed an annoying rattle which seems to be coming from suspension or possibly engine. Evident at low speeds, not changed by braking or moving steering, cant hear when going faster. Initially thought it might be the brake drying system going on and off as started while raining, but it persists in dry.

Anyone else had this sort problem?