BMW 3-Series and 4-Series Forum (F30 / F32) | F30POST - View Single Post - Turbo upgraded, xdi-35 installing now... do i need new spark plugs?

Jeff@TopGearSolutions · 12-06-2019, 02:46 PM

Actually, depending on mileage, you may be due. The factory plugs can last 35-50K miles usually no problem but on a tuned vehicle especially with higher boost and potentially higher EGT you'll probably want to replace around every 15-20K miles.

12-06-2019, 02:46 PM	#4
Jeff@TopGearSolutions 3441 Rep 79,211 Posts Drives: C6 Z06, 09 335i, 10 335xi Join Date: Dec 2008 Location: www.TopGearSolutions.com iTrader: (37)	Actually, depending on mileage, you may be due. The factory plugs can last 35-50K miles usually no problem but on a tuned vehicle especially with higher boost and potentially higher EGT you'll probably want to replace around every 15-20K miles.
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