Quote:
Originally Posted by dkl
The OE laser platinum that came with the X5 last a pretty long time - rated for 100k miles. They still look decent when I had initially swap them out at 60k, but I wanted to do it mostly just so they wouldn't get "welded" to the head. After that, I made it a maintenance item at every 60k - 70k miles.
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Thanks all for the responses. I noticed the platinum ground ones last much longer in the link posted by dkl too (my next set if it makes it past 260k).
I admit I waited too long to replace them and I expected some wear. I was just amazed (or was ignorant to the fact) that a car could still run without any misfires or codes with a 2mm+ gap in all the spark plugs when recommended gaps are less than a 1/4 of that.