I've just put new tyres , brake disks and pads on my Saab 9-5.The wheels were balanced in the tyre fitters. Since then the car has a vibration starting at around 70 mph and goes on to around 100mph . Ran out of road to see if this continued. Anyone out there got some advice as to what is happening? I couldn't see any problems with any of the joints or gaiters when i changed the disks and no trouble with the ride until reaching speed. Thanks for reading, and i hope someone out there can help. Cheers.