Front Suspension Wheel Bearing problems of the 2012 Kia Motor Optima

At 20000 miles my fog lights would not work , the weird put the directional signal to turn right they would come on for a short time, replaced bulbs nothing they don't work. Also had to replace brakes and the tires, tire brand are junk, poorly made they were beyond the limit for safty, then at 40000 miles both front wheel bearings had to be replaced, now at 78000 miles the struts are making a horrible clanking and the ac is blowing hot air even after 2 cans of the stuff the mechanic said to add. I travel on the highway to work 36 miles one way daily hense the milage but the high way is smooth as well. Very disappointed kia owner, when called to ask about the fog lights was told your problem so im sure the struts will be and the ac will also be my problem . Sadly thought they would back up there product.