The Metro might have ice lumps frozen to the rims, it happended to me I drove a 100k and the car was warm and nice and I drove the last part on smaller not wellplowed roads and parked a few hours and drove home as I came out on the big road and was going 50-55 it wobbled so I stopped found ice lumps on rims so I just knocked them loose and all was fine.

Turned out part of the tyre had delaminated so was abit egg shaped, put the spare on and all it good now.

Sorted out the Audi today aswell, the wife had done a very good job of reshaping one of the suspension arms.