I hear a droning sound at about 27 - 30 mph and 47 - 50 mph. It appears to be coming from the front end. The dealer says this is normal. Another garage said it could be front wheel bearings but would have to explore it.
As for the k&n filter I've been running these for 12 years both in my vehicles and cycles. Thnaks though for the thought. Also, I couldn't find any data in my manual as to when to change plugs. the dealer told me this are life time plugs, which I don't believe they are.