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      01-30-2013, 07:38 AM   #29
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Drives: E90M3
Join Date: Aug 2007
Location: Sacramento

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2008 BMW M3  [0.00]
Originally Posted by Sean05 View Post
WOW... on a sparkplug its not going to change anything... change it every 30k... even guys that tracks constantly dont replace it that often..
Sure it makes a difference. Many people are having them changed ~ 20k from other posters here. 37k is just the MAX you want them to go. Since I drive 4k/year, changing them every 4-4.5 years seems reasonable for leaving a plug in the head.

08 E90M3 6MT Alpinweiss/Carbon/BMW Pedals/Dinan Exhaust/Rattle fixes
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