Hi,

This about a '73 240Z....I'm getting a vibration that feels like it's coming from the right rear. It occurs at higher speeds (hwy) and, it's somewhat, violent in nature. This seems to have occurred "over night", as the previous outing was vibration free. I've jacked the rear and probed and prodded different suspension components including the universals. Not finding any apparent "loose" joints etc., now, I'm thinking the tire may have "thrown" a balance weight, or RR shock gave up? Any other thoughts?

Also, are the outer hub (rear) bearings service-able, that is, can be lubed?

Thanks for any ideas.

Check/tighten ALL driveshaft and halfshaft nuts.

Check your u-joints for play, too, though Leon's answer covers the primary culprits.

Thanks! Although none appeared loose, I'll wrench'em to be sure.

Simple test is rotate front to rear and eliminate tires and wheels

Thanks for your input guys. I'm going to re-check, and swap tires side to side.