Punctures were common ; tyre manufacturer Michelin introduced a detachable rim with a tyre already affixed saving a significant amount of time over manually replacing the tyre .
Already affixed could be quickly swapped onto a car after a puncture .
Punctures were common ; tyre manufacturer Michelin introduced a detachable rim with a tyre already affixed , which could be quickly swapped onto a car after a puncture , saving a significant amount of time over manually replacing the tyre .