Why is my Vauxhall Insignia's steering wheel shaking?

I've noticed that when driving at high speeds, my Vauxhall Insignia's steering wheel starts shaking. What could be causing this and how can I fix it? Any advice would be greatly appreciated.

The most common reason for a shaking steering wheel is an unbalanced tire. It's important to get your tires balanced regularly to avoid this issue. You can also check for any visible damage to the tires, such as flat spots or bulges.

Another possible cause for a shaking steering wheel could be a problem with the suspension or steering system. It's important to have this inspected by a mechanic to determine the exact issue and get it fixed.

In some cases, the shaking could be a result of worn out or damaged brake components. Have a mechanic check your brake pads, rotors, and calipers to see if they need to be replaced.