Why it matters: Tyres: tread, size and damage each count separately

A tyre with just enough tread but a visible carcass offers no certainty — the fabric underneath is not designed for grip and can fail unexpectedly at high speed. And two different sizes on one axle disrupts the vehicle's balance, even if both tyres individually look fine. The APK at the garage in Apeldoorn is one check moment; the standard itself applies on every trip.