Quote:
Originally Posted by 335twins
I replaced my spark plugs about 30k miles ago in my 2012 X3 35i (around 80k miles), I'm at 110k right now . Am i due for another change? or is it every 50k miles?
Thanks
|
Stock engine; every 60k miles / 100,000km unless you have issues with a misfire.
Tuned engine; depends on the tune but 30-40k miles as a starting point.
If the ignition coils are original then consider changing those soon, they will be near the end of their life.