My beloved 05 plate, 20v, petrol, V70,-150K miles, has devloped a front end vibration which starts around 60 mph and disappears above 80 mph. We have balanced the wheels, fitted new discs and replaced lower ball joints to no avail. The car has just sailed through its MOT with no referrals. The rubber in top engine to bulkhead mount is in need of replacement but this is all we can find. The garage believes that it might be the flywheel (dual mass?) about to fail, but as the vibration commences regardless of me being 3,4 or 5th gear, I think it must be something else. Any suggestions?