All of the above are questions we are asked all the time.

The chains you need depends mainly on the tyre size but also on the cars wheel clearance which you can find in the vehicle’s manual or sometime’s on the inside door panel.
Fitting is simple, for most all you need to do is thread the chains behind the tyre, link up and secure tightly. THen roll the car forward a meter or 2 to get them aligned correctly.
You can use them in all sorts of snow however if you come to tarmac it is advised to remove them as soon as you can to ensure a long life for the chain.

More information can be found on www.ThuleOnline.co.uk