What octane is everyone running on their cars? I know the minimum is 87 octane, with 91 recommended and 93 recommended for M cars.
I’ve ran 87, 89, and 93 octane and have felt no performance difference. Also, I don’t hear any knocking on any octane thanks to the knock sensors.
Car is a g20 m340i with a b58.
I wouldn’t put less than 91 on a b58 honestly. You might feel no difference but the car is definitely adjusting parameters in the background. It’s a performance oriented car I don’t know why you wouldn’t want it to run optimally