did it sit on concrete all winter on the jiffy stand? flatspot on the left side of tire?

 

It sat on asphalt with jiffy stand down.....I've had it out several times this season and have put about 250 miles on it. Yesterday was about 75 degrees ambient and I had put 20 miles on it at varying highway/backroad speeds and still noticed the vibration....

 

I had a similar problem on my 06 Standard.
The bike would vibrate slightly and make a low level RRRRRRRRR noise , only while taking a long left hand sweeping turn at 50 mph or above with the wife on the back.
Knowing that the dealer wouldn't ever be able to simulate the problem , I figured on trying my own idea.
My thought was the belt was getting too tight in this exact situation.
The belt should get slightly looser while taking a sweeping right hand turn because of the rear pivot shaft bushings deflecting under that particular force.
I ordered the Harley belt deflection gauge and when I checked the belt , it was at the tight end of the spec.
I adjusted the belt to the looser end of the spec and it seemed better if not gone all together.
This is a very small change , but it seemed to help on mine.
I never had the problem when riding by myself , only with a passenger.
Maybe a possibility.
Mick