I have an unusual vibration in my 05 Limited. It feels like a balance issue, only it is rhythmic in nature. It happens around 65 to 75 and can be described as "thrum, thrum, thrum......... I know Max had this problem but I could not find the thread to see what the solution was, if any. It is NOT wheels or tires, as I have had new rims and have changed the tires and it is still there. Its in the dealership now and I was hoping with your help I could steer them in the right direction.
Possibly the drive shaft is out of balance? It has recently developed a low speed growl which sounds like the front tires, but they have only been on the car for about 3000mi.


Thanks for you help