What is a run-flat tyre?
Run-flat tyres are specially designed with an extra thick sidewall and bead that prevents the tyre from coming off the rim de-beading if you happen to get a flat. You can continue driving on the tyre for up to 200km at a slow speed before the tyre completely disintegrates.
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Due to the type of tyre construction having these fitted from new or replacing them can be a costly exercise and many of the OEM's that fitted them as standard now only offer them as an option.
What are the advantages of having run-flat tyres fitted?
The main advantages of run-flats are time and effort. You don't need to carry a spare wheel, and if you do get a flat, you don't need to get dirty on the side of the road changing out a wheel. You can just continue driving at a slow speed to the nearest tyre shop and have the unit replaced. There is also a safety factor, here in South Africa many late-night criminal activities will see bandits put debris on the road to cause punctures and then rob unsuspecting motorists who stop to replace the flat. If you run flats fitted this is no longer an issue.
Are there any disadvantages?
The only real disadvantages are the cost. The initial cost of fitment and if you do get a puncture it cannot be fixed and will have to be replaced at the extra cost.
