I bought 2 new 600 SilverWings---rode them to 50,000 miles quickly, I am sure they would go to 100,000 miles or more---I just did not want to be bothered with used scooter---and I like riding with Honda warranty----no known weak points other than some plastic cracking, 15,000 mile belt life----both of mine traded with original spark plugs and no valve adjust. Cheapest fuel used
I had 2 new SilverWiings, both ridden to 50,000 miles each quickly still under Honda warranty---I like riding with warranty---at 50,000 mile, still original plugs and no valve adjust---ran fine, cheapest reg gas and WalMart 10-40 oil---some cracked plastic, terrible oem windshield, good tire selection, 15,000 mile expensive belt life---I am sure ridden a lot they will/would go to over 100,000 miles====old not ridden a lot I am not sure