Rear end noise, howl from under vehicle & engine whine

What is your question?

Hi, owned a 2012 ford focus and traded that nightmare for a 2013 Hyundai Sonata gls 2.4l. Started noticing a whine from engine, told by dealer this was normal, is it? a howl from under the vehicle not all the time, just sometimes (sounds like under seat, even at idle) deal says cannot detect, tightened the exhaust connections and pressure washed the baffles--still makes noise. A noise from rear wheels like a thud, thud sound between 60km/h and 100km/h then can't be heard. Jacked up rear end and checked tires for broken belts--NONE and balancing weights are there, then spun wheels seems to catch on brake shoes on spot on the rotors. Would this cause this issue? Nothing heard from wheel bearings