You have packed heavy luggage into the boot of your estate car and secured additional cargo inside a roof box for a long journey. How will this distribution of weight affect your vehicle's handling, and what adjustments must you make before driving at night?
- AThe extra weight improves directional stability; you should reduce tyre pressures slightly to soften suspension travel and raise the headlight beam aim.
- The elevated centre of gravity and rear load will reduce cornering stability; you must increase tyre pressures to the loaded setting and lower the headlight beam aim.Answer
- CThe additional downward force will significantly shorten overall braking distance; you should maintain standard tyre pressures and raise the headlight beam aim.
- DThe vehicle will become less prone to body roll; you should increase front tyre pressures only and leave the headlight beam aim unaltered.
Answer
The elevated centre of gravity and rear load will reduce cornering stability; you must increase tyre pressures to the loaded setting and lower the headlight beam aim.
Carrying heavy cargo in the boot compresses the rear suspension, causing the front of the car to pitch upward and raising the headlight beam angle, which will dazzle oncoming drivers unless adjusted downwards. Furthermore, carrying weight on the roof raises the vehicle's centre of gravity, increasing body roll and diminishing stability when cornering. To maintain safety, control, and tyre integrity, tyre pressures must be adjusted to the higher laden figures stated in the vehicle handbook.
Step-by-Step Solution
Key Concept
Impact of heavy and roof loads on vehicle dynamics, tyre pressure requirements, and headlight aim adjustments
Estimated Time:1m 30s