Hey scotty I have a vauxhall astra 2001 1.4l and I have a problem with my steering shaking. It shakes slightly at any speed but it's really noticeable above 60mph and at 80mph it makes the car weave from side to side and I have to back off as it feels like I'm losing control of the car. I had a new right rear tyre fitted in march at the Vauxhall dealer and the other 3 were done last december when I had my MOT test at a local mechanic. Just wondering what it would be and if it's worth getting it fixed or live with it, thanks.

either tires are bad or rims are bent, or a front end part is worn like tie rods or ball joints. Here in the states honest front end shops give free checks and estimates, start there or live with it