Quote:
Originally Posted by M Fifty
The plugs in my E46 were last changed after 60k miles. So about 10 years? Some erosion of the electrodes, but it ran fine. Fuel economy increased mind.  |
Just remember the e46 was NA and the m2 is turbo charged which means spark plugs are consumed faster and the high cylinder pressures can blow out the spark easier meaning healthy plugs are vital.