What are run-flat tyres?

Run-flat tyres are an alternative to carrying a spare wheel in the boot. Here's everything you need to know... 2016-12-31 13:00 In some ways, car makers see the spare wheel as a necessary evil, but run-flat tyres are one solution that means a spare wheel doesn't need to be carried.
Spare wheels take up space, and modern car design increasingly likes to use every available millimetre so there isn't always room for one. Space-saver spare wheels take up less boot space, while many car makers subst