Originally Posted by Mpowah
Hey folks -
When would you consider changing your spark plugs? To refine my question further, I am not asking when does the manufacturer recommend it but rather when is it reasonable to change it? I have 46,000 miles on my 08 M3 and I baby the car in the event this impacts the responses to this question. Thanks for your input in advance!
Your owners manual says every 37k miles.