Which of the following requirements should tyres of an agricultural tractor meet?
Show the correct answer
Correct answer
B. The tyres on wheels on one axle should have the same construction and tread pattern.
Explanation
In the photo there is the wheel of a green agricultural trailer with a tyre with a clear tread, leaf springs and a rubber mud flap behind the wheel. The tyres on the wheels of one axle of the trailer should have the same construction, including the tread pattern - answer B.
The rules on the technical conditions of vehicles prohibit fitting a vehicle with tyres of different construction, including different tread patterns, on the wheels of one axle. Tyres of different construction flex differently and grip the road differently, so when braking, the trailer would pull to one side and could swerve. A tread depth of at least 3 mm (answer A) is not a requirement - the limit is the tread wear indicator, and for tyres without indicators it is 1.6 mm. A tread only for off-road driving (answer C) is not required; the tyre must be suited to the wheel load and the speed of the vehicle. Before the season, inspect the tyres: cracks that expose the carcass make a tyre unfit for use, and you set the pressure according to the manufacturer's recommendations for the given load.
Legal basis: § 11 para. 5 and para. 7 point 1, 4 and 5 and § 46 para. 2 of the Regulation on the technical conditions of vehicles and the scope of their necessary equipment