Although many owners rely upon it, the added traction of four-wheel drive doesn’t suffice alone to ensure safe driving on snow or ice. Fitting the right tyre is just as important, arguably more so. Winter tyres are a niche product in the UK, but unbeatable for anyone who needs grip in these harshest of conditions. To help you select the right product, Auto Bild Allrad tested 12 brands of size 245/45 R18 winter tyres for SUVs and 4x4s in a range of conditions. The test team also entered a summer tyre into the fray to highlight the massive difference in capabilities between regular and winter tyres in certain conditions.