Doc, I had your tensioner installed on my 2013 RT LTD - picked it up from the dealer on 28 April and had a 65 mile ride home to check it out. Yesterday, I rode with the Maryland Spyder Web, and got to give it a real workout - I have to ride 65 miles, each direction, to and from the meetup location, mostly on highways. I was running between 55 and 80 MPH and never had any perceptible belt vibration at any speed. It works great. I'm a believer!