my f31 doesn't seem to sit level. I'm maybe been a bit paranoid but is this normal? the drivers side floor to arch hight is at least 1cm lower than the passenger side. the passenger front is about 1.5+ cm higher than the driver side. i have just bought the car and had it back to the garage about this and a few other things but i don't think they have looked at it as its just the same when its came back. (also if i open the back door and stand on the sill i hear like a rusty squeek from the suspension/spring is this normal? its a 2013 touring) also a vibrating gear knob which seems to have calmed down a bit but still vibrates is this normal I'm told it is?