Having had the wheel balancing done for all 4 wheels, I went for a test drive and the steering wheel vibration at 100kph was gone. But, sadly, it is now vibrating at 110kph or so. The strange thing is that after some spirited driving, the car vibrated more than it did normally and the vibration now seems to be shaking the whole car at 110kphph quite badly. Could this be an engine or gearbox or suspension related problem?

Even more weirdly, the car has been back to perfect with no vibration at various speeds in the past 2 days. But, I didnt go into boost since the shaking to avoid any damage to the turbo or engine.

My noisy front anti-roll bar drop links are still not replaced. And, I am really worried Could the sticky weight used in the inner wheel for the balancing job be loosened by the heat during the spirited run? All I did was 3 launches from lights to stop.

Would anyone please help to diagnose this problem?

 

Where the tires road force balanced ? Could be flat spotted tires if your car has sat for awhile. Or could be a wheel bearing or cv joint,driveshaft coupler as well.Best thing to would be to get the car up in the air for an insp of these components. Wheel bearings are one of the known issues w/ our cars