B: When the vehicle is fitted with anti-lock brakes
C: When the tyre tread is worn below 2 mm
D: When carrying a heavy load
View hint
Check the vehicle handbook. This should give you guidance on the correct tyre pressures for your vehicle and when you may need to adjust them. If you’re carrying a heavy load, you may need to adjust the headlights as well. Most cars have a switch on the dashboard to do this.