When replacing tyres, what rule should be followed?

En español: Al sustituir neumáticos, ¿qué criterio debe seguirse?

A Replace only the worst single tyre
B Freely mix different types and sizes
C Replace at least both tyres on the same axle, of the same type and size Correct answer
D Fit one winter and one summer tyre per axle

Why this is the correct answer

You should replace all four tyres, or at least both on the same axle, with the same type, size, and category. Do not mix tyres of different types (radial/bias) or seasons.

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