How did you try turning the wheel? It will not just spin normally, you need to put a socket and big bar on the centre nut and then stand on the end of it. The wheel should turn very slowly with quite a lot of resistance.
As rousecapri says, vibration is more likely to be a UJ on it's way out - or maybe even the bearing on the VC. I've just noticed that the output from the VC on mine has a bit of play on it (new front prop too) and that there is a tiny amount of play in the VC bearing... needless to say that is pretty high on the list of things to be swapped out when I'm next home!