Don't rely on the car's tire-pressure monitoring system to let you know when a tire is low on air. "[The warning system's] threshold is typically 25 percent underinflated," Rogers says. How far can you drive on an inflatable spare tire? Spares tires have a maximum speed of 50 mph. Spare tires shouldn't be driven for more than 70 miles. Basically, you need to run no faster than 40 mph if you are running 107% of the rated load. If you want to run 113%, you can drive no faster than 30 and the max speed drops to 20 mph if the overload is +21%. Since our RV owner was running at 200% load, I would estimate that maximum speed he could travel without doing damage to the “good Add soap or detergent into a spray with water and spray the rim edge, tread and tire sidewalls. Start with the valve stem before getting to the inside and on the side edges of the rim. Wherever a leak is present, bubbles will appear due to the escaping air. You will have to wait for 5 minutes before noticing the leak. Occasionally, a larger hole might not hold the plug properly, leading to continued leakage. Dak Simonton says: If a plug is correctly done and placed in a repairable spot (away from the sidewall), then yes, it can be driven on long distances. I drove 40k miles on a plugged tire in my F350, even pulling trailers. . While not driving, yes, you can leave your spare tire on. But, that is not the entire answer. Indeed, the car and spare tire should be okay as long as it is not moved or driven. Where the problem lies in that while the car is not driven, the tire is exposed to rain, the sun, or changes in temperature in general. There's very little chance they would all go at the same time. A loose lug nut will back off due to vibration, not the wheel rocking against it, and it is possible to lose four with the fifth staying fully tightened. If they weren't torqued properly, they would have been disappearing one at a time, not all at once. 2. Driving on a flat tire isn’t recommended, but it can be done in an emergency at low speed for a short distance. You should turn on your hazard lights and drive as slowly and carefully as possible. Avoid sudden turns or acceleration, which can lead to losing control. A spare tire can be used in place of a standard one and can reach up to 50 MPH. But, depending on how it was driven on, the life span of the spare tire will vary. Most spare tires have a driving distance of up to roughly 70 miles. This number can go a bit higher or lower depending on how it was used. After you hit the 70-mile mark, it is time Emme Hall/Roadshow. Run-flat tires aren't new, first debuting back in the 1930s. Run-flat tires are still used today, using a reinforced sidewall that can support a vehicle's weight after the tire

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