My R 80 g/s died suddenly while running perfectly. We went over a big speed bump and the engine just died. The battery is fine, the starter motor turns fine, the lights, horn etc come on but the lady stands as still as Greek economy. I yanked and spray cleaned every cable and cable port I could reach, still nothing. Ignition coils (latest bmw version) I measured gave a reading of 0,96 ohm for primary coil and 12,68 Kohm for the secondary coil. I 'm not really good with the multimeter and electronic stuff (I just tried to follow haynes guide lines as best as I could) so I don't trust my findings to indicate that I should fork the money for a new coil with any certainty. I just checked it cause adv wisdom states that when in bad weather or bumps airheads die of bad coils. Haynes states that the resistances should be between 1,15 -1,32 ohms for primary and 7,50 kohm -9,15 kohm. I also guess that it couldn't be any spark plug or spark plug caps or their leads as it would be rather unlikely that they both fail together so no sign of engine poping goes on. Once I had a cut spark plug cable and the machine started poping with the one of the two cylinders. My wiring loom is also fairly new, I changed it a few years back. Any ideas? Suggestions? Old airhead mandras? What should be the proper priority I give to start suspecting components?