im kind of stumped on this one. i just put new wheels on my car and i go drive it down the road and on the way back i start hearing this growling noise coming from the rear drivers side wheel. i look in the mirror and the wheel is wobbling. i pull over and get out and check the lugs. there all tight so i drive it back home thinking the rim might be bent. i swapped out the rim with another one and take it back out and it still does it. so i swapped it with another just thinking my luck might be bad and it still does it. so i go back to the house pull off the drum and try shaking the hub it wont move. looked at it from the side while spinning it and it seems to spin straight. anybody know what could be wrong?