My 93 rodeo has been shaking badly and riding rough as hell lately and I havnt been able to figure it out. I changed shocks, wheel bearings, upper and lower ball joints, front sway bar bushings and it was still shaking like crazy going down the road. So today I put jack stands under the rear end and let the wheels spin in the air and noticed the wheels were not spinning straight and had a slight wobble to them. I sat in the truck and got it up to highway speed and I could definately feel and see the wheels were out of shape. Could this just be the tires or wheels out of round, or do I have a bigger problem? Any help would be great.