Originally Posted by Martin_N
This is something new for me. What exactly can be balanced on a driveshaft? Can you give some more info on this?
Google it, there is a ton of information on balancing the driveshaft. In fact, one of the things that people check, prior to driveshaft balancing, are the u-joints. The OP said he checked those, so I proceeded to ask about the driveshaft balance.
But, clearly, the tire question needs to be asked first.