I can honestly say it's the only thing that really pisses me off- mine does that rattle every time I start it- warm or cold, on the side or center stand, night or day. I get those stares from my riding buddies like WTF is that? Even the Harley guys snicker a little, and a BMW rider said "that sounds serious, you better look into that". I hate making excuses, so I guess I better get a manual one installed. Every bike I ever owned had it's quirks, and usually more than one. I just wish this one had a more "quiet" quirk.