What can affect the driving stability of a towed trailer?

You answered correctly. All three factors can affect the driving stability of a towed trailer according to German traffic rules.

1. A center of gravity that is far back in the trailer can cause the trailer to sway or fishtail because the weight distribution is uneven, making it less stable during turns or at higher speeds.

2. Insufficient tyre pressure in the trailer tyres reduces grip and increases rolling resistance, which negatively impacts handling and stability, especially during braking and cornering.

3. A leaking shock absorber means the trailer’s suspension cannot properly absorb bumps and maintain tire contact with the road, leading to unstable movement and poor control.

Proper weight distribution, correct tyre pressures, and functioning suspension are all essential for safe towing and stable driving behavior.