[BimmerM5C]

Originally Posted by Who's on first

So, my car is misfiring above 5k or so. Seems my plugs are due for replacement. Over 18,000 miles, with track days and tuned.

I could not find a thread on this yet.

I was told to get NGK SILZKBR8D8S ... can anyone confirm this, or have another opinion?

Thanks

Trade it lol