When i drive over 80 my car starts to shake bad, and the tires are balanced perfectly. so i jacked up the car to see the problem, put it in 4th and let it idle at like 35 mph, the back tires both wobble, the lugs are all on tight. The whole assembly wobbles, rotor and everything. So anyone know why this could be? Is my hub bent or could it be wheel bearings?? It's a consistent wobble, and the right side is a little worse.

 

My vote is for a bad ball joint. These problems are relatively easy to diagnose. Just jack up the car, take off the wheels and start shaking parts with vigor until you find the culprit.

 

Is it just the back? To check the fronts, jack it up, wiggle from side to side if there is any play than tie rods, wiggle up and down if there is any play than bearings.

 

You can balance an egg, but it will still roll like an egg.

Keep that in mind.

 

If you can wiggle the wheel with the car jacked in the air, you need new bearings.

 

i worked at a tire shop for years and we always had to rebalance other shops tires.

 

NO ball joints in the rear of the car...OP do this: take the car,jack it up.then take the wheel and Grasp it at 9 and 3 oclock..try to move it ,..then take the Wheel and grasp it at !2 and 6..try to move it..Note if it moves..Now,Check the Wheel against the Hub.Sometimes when you put the wheel back on it won't sit right..it Needs to be Flush against the Rotor Face..another Thing:after you take the Wheel off,inspect the Toe bushings,and the other bushings that are on the Rear Hub assembly.One of the bushings may be shot.Check the wheel bearing for play.