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      03-12-2013, 07:26 PM   #1
TXM32B
Private First Class
United_States
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Drives: 2009 E90 M3
Join Date: May 2008
Location: Houston, TX

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Changing Spark Plugs

The service manual says to change the spark plugs in the E9X M3 every 37,000 miles. This seems overly excessive, especially in this day and age of modern engines. Most cars require spark plug changes after 100,000 miles. I know the 4.0 liter V8 is a high strung engine, but is it really necessary to change the plugs so often? Any advice would be appreciated.