OF SUPPLY 181 MINISTRY RUBBER IS SCARCE TYRES must be submitted for replacement when they are smooth THIS TYRE CAN NEVER BE RETREADED. It is ruined as a tyre. THIS TYRE CAN BE RETREADED. It will need less than half the rubber required to make a. new tyre. To help make good the loss to the country of 90% of the world's natural rubber resources, every ounce of Britain's rubber must be conserved. That is why, every day, every owner and driver of motor vehicles must ask himself this question: "Am I taking the greatest possible care of my tyres?" 18 POINTS FOR DRIVERS Have tyre pressures checked reguSee that brakes are evenly adjusted.