Over the last 5-7k miles i have noticed a low frequency noise and mild vibration in the right front of the truck. It only happens right at 65mph, it is not present at 63 or 67mph and is most noticeable at 65. Passengers have even noticed a vibration on the floorboard with their feet while at 65mph. It does seem to change with steering slightly to the right or left and sometimes will disappear at 65 with a slight turn input. I am wondering if anyone else has experienced this? Does it sound like a wheel bearing or u-joint? Truck has 53k miles on it, dealer says that either item is only covered under the 3/36 warranty, so it is mine to fix.