My car feels like it is put in a wind tunnel in speeds above 30 MPH.50

Two 'easy guesses you might have checked out; rotate the tires back to original position , and test drive for noise. If noise goes away , or back to the way it was , which apparently wasn't as annoying,then I'd recomend tires. HOWEVER...IF while your test driving ....Pay attention... as you accelerate (prefferably straight smooth road)if the noise starts to noticably 'kick-in' at about 25-30MPH and worsen as you speed up... then gradually slow down and pay close attention to the speed it goes away at..A wheel bearing will typically contine to be noticable at a slower speed when slowing down(turning into more of a low rumble)than when it starts--starts at 25....stops at 15? feedback?