Fuel grade

PRINCE THUNDERNIGHT · 06-17-2023, 05:52 PM

I’ve searched the forum, and haven’t found an answer, but I assume the B58 requires top grade juice?

yordmech · 06-17-2023, 07:11 PM

AKI 91 is the recommended fuel for it. Manual states that it can also accept AKI 89 if no higher options are available but should be avoided and may cause engine knock.

c1pher · 06-17-2023, 07:14 PM

Most higher performance cars require 91+. Ideally top tier gas.

M2siast · 06-17-2023, 07:16 PM

Quote:

Originally Posted by yordmech

AKI 91 is the recommended fuel for it. Manual states that it can also accept AKI 89 if no higher options are available but should be avoided and may cause engine knock.

Are you 100% on this?
I find it odd that the B58 has a higher requirement for minimum octane rating than the S58

yordmech · 06-17-2023, 07:55 PM

Quote:

Originally Posted by M2siast

Are you 100% on this?
I find it odd that the B58 has a higher requirement for minimum octane rating than the S58

Added screenshot from the manual. Also the inside of the gas cap lists the same. (Note: The sticker is not factory equipment)

M2siast · 06-17-2023, 07:56 PM

Quote:

Originally Posted by yordmech

Added screenshot from the manual. Also the inside of the gas cap lists the same. (Note: The sticker is not factory equipment)

Cool thanks. Interesting.

PRINCE THUNDERNIGHT · 06-18-2023, 08:19 AM

Some really great answers, thanks.

06-17-2023, 05:52 PM	#1
PRINCE THUNDERNIGHT First Lieutenant 331 Rep 368 Posts Drives: 2023 BMW M240i XDrive G42 Join Date: Mar 2023 Location: Tennessee (via UK) iTrader: (0)	Fuel grade I’ve searched the forum, and haven’t found an answer, but I assume the B58 requires top grade juice?
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06-17-2023, 07:11 PM	#2
yordmech New Member 42 Rep 18 Posts Drives: 2022 BMW M240i xDrive Join Date: Jun 2023 Location: Minnesota iTrader: (0)	AKI 91 is the recommended fuel for it. Manual states that it can also accept AKI 89 if no higher options are available but should be avoided and may cause engine knock.
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06-17-2023, 07:14 PM	#3
c1pher Primo Generalissimo 4673 Rep 4,023 Posts Drives: All of them Join Date: Jun 2009 Location: DC area iTrader: (0) Garage List 2017 Porsche 911 Ca ... [10.00] 2023 BMW M2 [9.00] 2023 Porsche Macan GTS [10.00] 2022 Ford F-250 Tremor [8.50]	Most higher performance cars require 91+. Ideally top tier gas.
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06-18-2023, 08:19 AM	#7
PRINCE THUNDERNIGHT First Lieutenant 331 Rep 368 Posts Drives: 2023 BMW M240i XDrive G42 Join Date: Mar 2023 Location: Tennessee (via UK) iTrader: (0)	Some really great answers, thanks.
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