Run-Flat Distance Calculator

Run-flat tires let you keep driving after a puncture — but only for a limited distance and under specific conditions. Select your run-flat tire type, tire condition, vehicle weight, vehicle load, maximum speed, road conditions, and outside temperature to calculate your safe driving distance. Secondary outputs include recommended max speed, estimated driving time, and a risk assessment so you know how urgently you need to reach a repair shop.

kg
km/h

Most run-flat tires are rated for max 80 km/h

°C

Results

Safe Driving Distance

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Recommended Max Speed

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Estimated Driving Time

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Risk Assessment

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Frequently Asked Questions

How far can I drive on run-flat tires?

Most run-flat tires allow you to drive 50-80 km (30-50 miles) at speeds up to 80 km/h after losing air pressure. The exact distance depends on tire type, vehicle weight, speed, and road conditions.

What is the maximum speed for driving on run-flat tires?

The recommended maximum speed on run-flat tires is typically 80 km/h (50 mph). Driving faster can cause excessive heat buildup and tire damage, reducing the safe driving distance significantly.

Do vehicle weight and load affect run-flat tire distance?

Yes, heavier vehicles and additional cargo put more stress on run-flat tires, reducing the safe driving distance. A fully loaded vehicle may only achieve 60-70% of the maximum rated distance.

Can I repair a run-flat tire after driving on it flat?

Generally no. Once a run-flat tire has been driven on without air pressure, the internal structure is typically damaged and the tire should be replaced for safety reasons.

How do road conditions affect run-flat tire performance?

Rough roads, potholes, and uneven surfaces increase stress on run-flat tires and reduce safe driving distance. Highway driving allows for maximum distance, while city streets with stops and turns reduce it.

What should I do when driving on run-flat tires?

Drive smoothly at reduced speed (max 80 km/h), avoid sharp turns and hard braking, head directly to a tire service center, and monitor the vehicle for vibrations or handling changes.

Do temperature conditions affect run-flat tire distance?

Yes, extreme temperatures can affect tire performance. Hot weather can increase tire temperature and reduce safe distance, while very cold conditions may make the tire more brittle.

Are all run-flat tires the same?

No, there are different types including standard run-flat, reinforced sidewall, and extended mobility tires. Each has different distance ratings and performance characteristics when deflated.