1 definition by slownb8
340 syndrome, also known as B58 syndrome, is when a person purchases a 340i and instantly think they have the fastest car on the street. These people have fragile egos, and will talk to anyone about their car who will listen. All of them have cringey 1stockf30 knockoff instagrams posted on the side windows.
by slownb8 March 19, 2023