I have a 2007 Honda Ridgeline, bought it new. I have 157km on the vehicle and within the last 3 months I noticed the following. Between 70 and 80 kilometers per hour I can feel a vibration. This vibration does not occur when accelerating or when under load under 70km or above 80km. Just wondering if any other owner has experienced this or if anyone has any ideas on what the problem might be.