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Automotive glossary

Top Speed

Top speed is the highest speed a car can reach, limited by power, drag, gearing or an electronic limiter.

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What is Top Speed?

Many cars are electronically limited, often to around 250 km/h for powerful models. Electric cars often have lower limits to protect range and the motor. Tyres must have a speed rating that matches the car’s top speed. Some manufacturers raise the limiter as a paid option on high-performance models.

How it works

At top speed, the engine or motor power is fully used to overcome air resistance and rolling resistance.

Why it matters for your car

Public roads have legal speed limits far below most top speeds. Never fit tyres with a lower speed rating than required.

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