This is my problem

on the motorway today,upto speed,crazy steering wheel wobble and alot of cabin vibration,sun visors rattling etc,WTF,so pull over, no puncture,wheel nuts all tight,hmmm,back upto speed,still like it at 60-70-80 then after 10 minutes, perfect again for the whole journey,arrived at place,drove around etc, drove back home, all fine, at all speeds.

jack her up,took a look,no visual signs of anything amis

missus takes it work just now, phones me up,done the same thing this time even at 30mph,she only has a 10 mile journey so not too bad

weird huh ?

any ideas,i 1st thought wheel balance but why go fine again for hrs then do it again, i also thought maybe the tyre rubber as the motorway journey was from cold,clutching at straws really,but the tyres/air is hot right now so why do it again



could it be the propshaft ?