Originally Posted by Conzyo
What should we change our spark plugs to besides OEM?
I don't think there is an aftermarket OEM. In fact NGK is a lot cheaper than the same plugs branded by BMW. You are just paying for the BMW name when you can buy the NGK ones for a lot cheaper. There are some great retailers in the US where I got mine from ... shipped to Australia cost me half the price compared to buying it locally through the dealer.