RFTs (also called zero-pressure tires) come standard on about 12 percent of new vehicles. This could result in other problems if you replace only the two worn-out tires.Ĭonsider costs, repairability, and convenience if you’re thinking about getting or ditching RFTs. If you mix and match, you may end up with significant differences in tire tread depth between your front and rear axles. You won’t have proper stability, especially when you need it most: around corners, at highway speeds and when swerving.ĭue to the way they’re made, RFTs typically wear out long before standard tires. When there’s a big difference between your front and rear tires’ sidewall flex, your car’s handling will be imbalanced. This is why they can be driven between 50 and 100 miles (depending on the type) at about 50 mph with low or no air. Run-flat tires (RFTs) are built with reinforced sidewalls, which make them a lot stiffer. This is not the case when you mix and match run-flat tires with standard tires. You’ll have safer handling and prevent damage to other parts of your car when all four tires on your vehicle match closely in type, tread depth and size. It is also not recommended to mix different run flat technologies/products.Can I Mix Run-Flat Tires with Standard Ones? The conventional tire should then be replaced with a run flat tire as soon as possible. You can never mix run flat tires with tires that do not have run flat technology (conventional tires) unless it is an emergency situation on a limited and temporary basis. Run flat tires allow you to drive for a limited distance and reduced speed after you suffer a puncture or any other event that results in either a drop in tire inflation pressure or a complete loss of inflation pressure.įor example, the MICHELIN® Zero Pressure (ZP) tires provide run-flat technology that allows you to drive up to 80 kilometers at 90 kph with a flat tire. If you are not sure if your car is using run-flat tires, then check your vehicle and look at the tire sidewall for the letters RFT. To try to prevent having to stop right away when you have a tire problem, a technology called Run Flat Tires is available. Depending on the situation and weather, it can be a very dangerous place to stop. The side of the road is not a fun place, especially on a really cold or hot day.
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