I have 38k on mine and I am bringing it next week for a SC. I asked them about changing the spark plugs as well as some other items and they told me the spark plugs are swapped at 50k
I have no concerns about paying out of pocket as I want to ensure everything is working flawlessly before outing SC in. But like you would prefer to use the warranty to my advantage and I would assume that these should be changed at this time since I bought it 2010.
Anyone else know?