While the reduced weight of carrying around a spare might seem like an advantage, run flat tires also have an impact on your fuel economy. On average, run flat tires are about one third more expensive than regular tires. Sheri Hermann, Communication Coordinator from Continental Tire tells us “run flat tires provide convenience to a consumer, but conventional tires are typically lower in cost and have better ride qualities.”Īnother top complaint is in regards to price. Auxiliary supported tires don’t have stiffer and tougher rubber, but are attached to a special rim which has a steel support ring that is attached to the wheel and can support the weight of the vehicle.Įven though run flat tires have been around in production vehicles since 1994, the adoption as a mainstream replacement for conventional tires has been slow for many reasons. If you do get Self-Supporting tires (see right) you will need a tire pressure monitoring system (which is now government mandated standard equipment on new cars), because a driver may not notice their tire has lost pressure without it.
Self-Supporting tires have stiffer and tougher rubber, which can temporarily carry the weight of the vehicle under lower tire pressure. There are two main types of run flat tires: Self-Supporting, and Auxiliary Supported.
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