text: First, check to be sure the boots are intact and not torn. (The boots are those rubber, accordion-like coverings around the ends of the drive axles. But you know that already.)
  Then be sure the clamps are secure and there’s no lubricant seeping out. If all of that checks out, then the CV joints are not your issue. But if the boots are torn, then there’s dirt and other road filth damaging those joints.
  If you’ve got a stuck caliper, your car is going to start shaking at around 40 to 50 mph. The shuddering gets worse the more you accelerate.