Narrow the noise down as lacroupade suggests. Find which wheel. If only on full lock, any particular surface, slow or any speed. forward or reverse
Once done then jack up the vehicle test for play in t he bearing top to bottom and front to rear. Rotate and see if anything rubs from the dirt guard against the disk to a worn pad or even a stone wedged somewhere
I would say a bearing should be under warranty. They should last a very long time.