BMW 3-Series and 4-Series Forum (F30 / F32) | F30POST - View Single Post - Any issues running 89 octane instead of 91 on a 430i?

F30guy · 09-23-2018, 07:06 PM

Are there any issues with doing this long term? Any idea on how much HP is lost running 89 rather than 91? (91 is the highest here in CA)

09-23-2018, 07:06 PM	#1
F30guy Private First Class 26 Rep 145 Posts Drives: BMW 430i Convertible Join Date: Oct 2007 Location: USA iTrader: (0)	Any issues running 89 octane instead of 91 on a 430i? Are there any issues with doing this long term? Any idea on how much HP is lost running 89 rather than 91? (91 is the highest here in CA)
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