Basically, when I'm driving along, more noticable at higher speeds but I think it's happened when idling too, there is a sort of cyclical vibration, it's somewhere between 1 - 2 seconds, almost like a pulse, and yes it's regular.
Any ideas as to whether this is normal, whether it's an easy fix, what it could be, whether my car is going to blow up and die etc?
Got a 318is, all standard bar an E36 rack and a lightened flywheel, or so I was told...
Help please?



