Re: Handlebar shake?
Thanks you all, for these thoughts.
I first had the problem, as my post said, on 6 year old Metzlers (identified by tyre code) that looked good but may have done as much as 6,000 miles. My dealership checked out all the obvious causes for me, and had the bike up on the bench, so I'm assuming (but will re-check) that they looked for a loose fork issue, or something like that.
It was the dealership who pointed out the possibility that the wheels hadn't been balanced, and they who arranged the new tyres to be fitted. I cannot believe the tyres are the problem, unless I was unlucky to have a maverick one on the bike when I bought it, and a maverick fitted when they were changed.
Thanks for ruling out the damper, too.
To be clear, the wobble comes in under acceleration and back again as I slow down. Always between 35 and 50 mph. Sure, I can live with it by not loosening my grip on the bars, and it goes away at 50+. However, who is to say it won't get worse, especially at speed, and one does, of course, do a great deal of day to day riding between 35 and 50.
I will be back to the dealers soon to ask for a full investigation under the warranty, and will report back.
Deepest Black 2008 K1200LT Lux