Very carefully! The best tire chains will give you a real boost to the overall traction of the car, but they don’t allow you to simply drive as if there was no snow – they are an aid to driving, not a cheat on a PlayStation game. It’s recommended that you don’t exceed 30mph whilst using tire chains, and you should also avoid harsh braking or accelerating. As well as risking control of the vehicle, they can also damage or even break the chains.