u/TTRictus

Hello guys,
I recently bought my first bmw 325i e90 2005 with 228000 km.
Since 1 week, i have this metallic sound that my car does when im park ans engine on and when i reverse.
And, there is some water slightly dropping when this sound appears. What could it be ?
Thanks in advance for your help !

Hello, i bought a 325i e90 from 2005 n52b25 manual. That morning i got that noise of tactactac… when the engine is running slow.
Does it happens to somebody ?
Thanks guys