Symptoms of drive shaft failure?

[mholbrook]

I have been getting a vibration that I thought was a tire issue but now wonder if it is drive shaft related. Last time the car was up, the flex disk was checked and it is good, near new and no cracks. The center bearing may be suspect or ???

Only notice at freeway speeds. At low speeds, no real vibration. All suspension parts are new so pretty sure it is not suspension related. Certainly not upper control arms etc.

Anyone who has had to replace their drive shaft and has info on symptoms prior to replacement, I would appreciate hearing from.

[Hector]

Improperly balanced tires, uneven tire wear (different from tire to tire,) different tires, radial runout... all cause vibrations that are distinct but are mostly cyclical in nature and speed-dependent. Usually, when a driveshaft is about to bite the dust, you can feel the vibrations above 35 mph if you put your hand on the driveshaft well just in front of the back seat.