E90/E91/E92/E93 (2006 - 2013)
Hi,
I had bought a BMW imported from japan. It is a 2006 320i. I just notice that there is a weird sound rumbling sound. It is like a bass sound wob wob wob. Like a big boat when I run between 30 to 40 kilometers per hour. Is this a normal thing? I'm driving the car on a smooth road...