You need two bits of information before buying:

1) What's your tyre size?
The starting point. Check the tyre, not the handbook. In the example on the right the size is 205/55-16.

2) Are snowchains permitted?
Does your van manufacturer allow traditional snowchains to be fitted to your make and model? Find out by checking your handbook. You can get started by checking our snow chains database; this shows all your options but is no substitute for checking the handbook!