It may be just me or it may be something wrong but here goes! When I had my new wheels fitted the problem first occured. When the car got to about 80mph the steering wheel you vibrate / wobble. It wasn't very much but it was still noticeable. It didn't do it at speeds lower and it would go away at higher speeds. I took it back to the garage and found the front wheels were balanced incorrectly. They rebalanced them and I went for a drive. The wobble is still there but only on certain road surfaces. Is it because the new wheels are lighter and pick up every single grove of the road or is the balance machine the garage are using faulty? If the rear wheels were unbalanced would it make the steering wheel wobble at 80mph? Any help is much appreciated!