Which of the following actions should you primarily do before a long motorcycle ride?

In the photo there is a cruiser motorcycle with a large windscreen and a double seat - a machine ready for a longer trip. Before a longer motorcycle ride, you should above all check the tyre pressure - answer B.

The Regulation on the technical conditions of vehicles requires the tyre pressure to comply with the manufacturer's recommendations for the given tyre and vehicle load, and the Road Traffic Act requires that the vehicle does not endanger safety. Of the three answers, only tyre pressure has a direct effect on riding safety: too low pressure impairs stability and grip, too high pressure makes the contact patch smaller and lengthens braking, and on a long trip with luggage and a passenger the tyres work for hours under a greater load and heat up. The air filter (answer A) and the spark plugs (answer C) are replaced at a service according to mileage - their poor condition worsens engine performance, but does not cause a fall. You measure the pressure on cold tyres, and with a passenger and luggage you increase it to the value given in the manual. At the same time you check the tread, oil, chain, brakes and lights.

Legal basis: § 11 para. 5 of the Regulation on the technical conditions of vehicles and the scope of their necessary equipment; Art. 66 para. 1 point 1 of the Road Traffic Act (Prawo o ruchu drogowym)