I have an 06 Honda CRV with 140,000 miles that is having a vibration problem. My husband was trying to tell me that it was just the road but I know that is not the case. It feels like I am driving over rumble strips on the side of a highway but it only happens when the rpms are around 1500. It us usually when I am going around 45 mph or 55 mph. I can be driving straight or on a curve. As soon as I take my foot off the accelerator or add more gas (change the rpms) the vibration stops. I am by no means a car expert but would like to know if this is something serious. I would like to take a road trip but don't know if I can trust the car.