I have a high pitched whine that is deafening when traveling at highway speeds on a concrete highway. Took the car back to the tire dealer and they heard it too. They replaced the tires with another brand but the issue is still there. My ears will be ringing by the time I get to work and I have had to resort to ear plugs till I find out what the deal is. Either that or get rid of the car. The tires are quiet on blacktop roads at any speed. Any suggestions on what to do next?