I have an 06 Dyna with around 20000 miles I bought new and now I am getting vibration seems like from the motor. could it possibly be the inner primary bearing? My rear wheel is almost bald so I ordered another tire which I should get Tuesday. The belt tension is good and the wheels don't seem to be wobbling. When I accelerate fast its okay but when I accelerate slow or slow down I can feel it in the motor or trans, it sort of feels like it is growling but not grinding. I read a thread on this site about inner bearing replacements at 15,000 miles but it was down played by Harley.Is there anyone else haveing this problem on thier dyna or any other model that seems simliar to this problem? Any advice? Here in the windy city the season is about to come to an end and I want to enjoy some of the last days we have this year without having to worry if I will make it to my destination or back home. Please Help.