As others have said here it sounds like it could be wheel bearing failure. I take it the car is no longer under manufacturers warranty and that the warranty is the dealers own warranty/insurance. You need to check the details of the warranty that you have to see if the wheel bearings are covered. A wheel bearing going after 19K miles is not acceptable as wear and tear. Typical rolling element bearing life follows a “Bath Tub” curve and consequently it is not unknown for them to fail prematurely. If they don’t fail prematurely they can be expected to last a long time before bearing race fatigue failure occurs.