engine

Hi all, Good to know there's a place to share and discuss with the beemers. Bought a 6yrs old used 523i recently, first few weeks are going all fine, but noticed a few small problems. When startup the aircon will have some gas leaking kind of light noise, and remains there. Later on I...

Dear all, I am on the verge of pulling the trigger for a S55 M3/M4 but am now slightly apprehensive on doing so. When doing research on the reliability of the engine, I came across many forum posts by owners who have experienced a spun crank hub on their S55 engines, stock and modified. It...