Do winter tyres work?

Following the heavy snowfall in the UK earlier this year, Autocar received numerous enquiries about the effectiveness of winter tyres - and a repeat of the conditions in the past few days has presented a opportunity to look at the subject again.

We took two BMWs and a standard and winter set of tyres to our test track for a quick-fire comparison. It's a far from scientific test, but it does prove the benefits of having more appropriate rubber in cold conditions.