It is recommended and sometimes obligatory to use winter tyres in Germany in "the winter", whatever that is. Since I go there 6 times a year I am not happy with the wheels supplied with the car. I have a spare wheel in my Skoda Superb, but it is not the same as the four alloy road wheels, a steel wheel, an inch smaller than the others and has an oversize tyre to bring it up to the same size as the road wheels. I would prefer to have a set of winter wheels, one of which could be the spare and vice versa when running on the winter tyres. This would, I hope enable me to continue my journey, after changing a wheel, without having to creep to the next garage (perhaps in the dark out of normal business hours). But, the Tyre merchants around here seem ignorant of such tyres. What do I do?