Turn Signal Flasher Unit problems of the 2008 Hyundai Sonata

2008 Hyundai Sonata. Consumer states discontent with denial of a online coupon, unresolved thumping, vibration that occurs when the vehicle is started. In addition the turn signal flasher/clicker is too quiet. The consumer stated the thumping and vibration occurred when he would drive away after the vehicle had been sitting overnight or it had been parked for 4-6 hours. After driving 3-5 miles, the thumping would go away, but not entirely. The thumping and vibration was felt in the steering. The consumer also stated the tires that came as standard equipment performed badly during snow and ice conditions. The tires did not grip properly. The consumer believed the problems were associated with the tires, because after the tires warm up, the thumping diminished quite a bit. The tires also had flat spots. The dealer replaced the flasher, but it didn't make any difference. The consumer stated it was still too quiet.