No, it's not normal. My 2015 had the front left wheel bearing replace at only 16k miles and rear diff was replaced at 21k. I'm at 122k miles now and all wheel bearing have been replaced. My passenger rear wheel bearing is needing replacement soon as well. Front shocks have been replaced, passenger front ball joint, all bushings front and rear replaced.. Doing the bearings is easier now with the cartridge design bolt on/off.. Doing pressed in wheel bearings can be a pain and almost impossible without a press. The front end on the 6th gen has always seemed wonky to me, even more so in the 3.6R. I miss having a good old hydraulic steering sytem.