The problem with space saver and run-flat tyres

Car manufacturers often equip new cars with alternatives to a full-size spare tyre, which are generally only designed to travel short distances.

If you do a lot of long-distance driving, it’s important to be aware of the kind of spare you have, in the event that you get a flat tyre in the middle of a road trip.

Many modern vehicles now come with a space-saver tyre as the spare, which is smaller than the standard tyres fitted to the vehicle. Some vehicles have four run-flat tyres and no spare at all.

Run-flat tyres have a stiff rubber sidewall that allows them to be driven limited distances while the tyre is deflated.

Other vehicles may only be equipped with a tyre inflator kit that can temporarily repair small punctures. Generally, inflator kits can’t be used to repair large punctures or where there is more significant tyre damage.

None of these alternatives to full-size spare tyres can travel long distances and are only a temporary fix to get you to a location where the damaged tyre can be repaired or replaced.

A space-saver tyre, a deflated run-flat tyre and repairs made with inflator kits will also limit the speed at which a car can travel.

If you’re planning a road trip and you’ve never checked your spare, take a look before you leave so you know what you are up for in the event of a flat. It’s also a good idea to check that your spare tyre is in serviceable condition and inflated to the correct pressure.