Did you use the $173 BMW version
http://www.ecstuning.com/BMW-E92-M3-...ugs/ES2207843/
or
Did you use the $87 version?
http://www.ecstuning.com/BMW-E92-M3-...ugs/ES2550769/
I am asking because I am getting ready to change my plugs and I am not sure if it is really important to pay nearly double for BMW version of the exact same thing.
If anyone else has any experience with this issue, please chime in and share what you decided to do when you changed your plugs.
BMW NGK LKR8AP plugs or Regular NGK LKR8AP plugs??
Thanks.