When new competition tyres are first delivered they need to be “scrubbed” before they are actually raced. This is because the tread is very sophisticated in its build but to get the best out of it, the smaller weak molecular bonds must be broken and allowed to reform into longer stronger ones. It is therefore of great importance to ensure that the first time the tyre is used, that this “reforming” of the tread is done correctly. If not, the tyre will not handle to its optimum performance and its life will be shorten.