Technical and Vehicle Safety
What effect does correct tyre inflation have on fuel economy?
- ○It reduces fuel economy by increasing grip
- ✓It improves fuel economy by reducing rolling resistance
- ○It has no effect on fuel economy
- ○It only matters for diesel vehicles
Correct answer
It improves fuel economy by reducing rolling resistance
Properly inflated tyres reduce rolling resistance, which means the engine has to work less and consumes less fuel.
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