Skip the auto shop - Our mechanics make house calls

Q: What should I know about run flat tires?

asked by on

What should I know about run flat tires?

A: If your car is equipped with run flat tires...

If your car is equipped with run flat tires, you have an important advantage over those without this technology. Run flat tires are designed to be used even if they’re punctured, which means you don’t have to pull over and install a spare tire. You do still have to have the tire replaced, though. Here are some other important tips for using run flat tires:

  • Don’t drive more than 100 miles with a flat tire.

  • Don’t exceed 55 MPH with a flat tire/run flat.

  • The tire pressure light will still come on if you have a flat or low tire pressure with a run flat tire.

  • If you’re not sure you have run flat tires (RFT), check the sidewalls for either “RFT” or “DSST.” Both of these denote a run flat.

  • If you have run flat tires on your car, you will NOT have a spare.

  • If the exterior temperature is very hot, you cannot drive for 100 miles on your run flat. Have the tire replaced as soon as possible and limit your driving.

  • You will notice a difference in handling when driving with a punctured run flat tire as opposed to an inflated tire.

  • Run flat tires cannot be serviced by all automotive service providers.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1000 mechanics are ready to answer your question.
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Ask a Mechanic
(100% Free)

Have a car question? Get free advice from our top-rated mechanics.

Ask A Mechanic
Over 10,000 questions answered!

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

Get a quote

What others are asking

Q: 2014 Toyota Corolla Fuel Odor

This may be related to the fuel tank purging system. As you may know, all modern cars are equipped with an Evaporative Emission Control (EVAP) system. The EVAP system prevents fuel vapors from the fuel tank from escaping into the...

Q: My car doesn't accelerate as it should for the first 2 shifts or until 100 km/h.

Hi there. Check the fuel system to the vehicle and see if the injectors need cleaned. Also, check the engine for any vacuum leaks. A vacuum leak will cause the engine to hesitate and not fire all the cylinders properly....

Q: Why does my 4 wheel drive, tract light, and engine check light come on all at once?

Hello. The Toyota dealership may be correct because the codes that you have listed are related to the charcoal canister. However further testing should be done to verify that the canister is at fault. The charcoal canister is part of...

Related articles

What Causes Hoses to Leak?
While the largest part of your engine is mechanical, hydraulics plays a significant role. You’ll find fluids at work in a number of different areas. Your car's fluids include: Engine oil Transmission...
P0240 OBD-II Trouble Code: Turbocharger Boost Sensor B Circuit Range/Performance
P0240 code definition Turbocharger Boost Sensor B Circuit Range/Performance What the P0240 code means P0240 is an OBD-II generic code triggered when the Engine Control Module (ECM) detects the intake boost...
P2103 OBD-II Trouble Code: Throttle Actuator Control Motor Circuit High
P2103 means there is a fault with the throttle actuator control motor circuit, likely due to a defective electrical component or part.