Sometimes you may need to increase your tyre pressure to above the normal value. When would this be necessary?

When the road conditions are slippery

When the tyre tread is less than 2mm

When the vehicle has an anti-lock brake system

Sometimes you may… — When carrying or towing…

The answer options

When carrying or towing a heavy loadCorrect
When the road conditions are slippery
When the tyre tread is less than 2mm
When the vehicle has an anti-lock brake system

Why the other options are wrong

“When the road conditions are slippery” is a distractor. It does not meet the standard the question is testing, which when carrying or towing a heavy load does. Picking it in the real test costs a mark you cannot get back, and with a pass mark of 43 out of 50 you only have seven to spare.
“When the tyre tread is less than 2mm” is a distractor. It does not meet the standard the question is testing, which when carrying or towing a heavy load does. Picking it in the real test costs a mark you cannot get back, and with a pass mark of 43 out of 50 you only have seven to spare.
“When the vehicle has an anti-lock brake system” is a distractor. It does not meet the standard the question is testing, which when carrying or towing a heavy load does. Picking it in the real test costs a mark you cannot get back, and with a pass mark of 43 out of 50 you only have seven to spare.

Why that is the answer

Carrying heavy loads or towing adds significant extra weight to your vehicle, putting additional strain on the tyres. Increasing the tyre pressure, as advised in your vehicle handbook, compensates for this extra weight and helps maintain safe handling, stability, and braking performance. Changing tyre pressures will not improve worn tread or compensate for slippery road conditions, while anti-lock braking systems operate independently of tyre inflation levels.

What vehicle loading covers

· Driver responsibility for load security and legal weight limits
· Loading a trailer or caravan and the effect on stability
· Stabilisers, breakaway cables and towing mirrors
· Roof racks, roof boxes and the effect on fuel consumption

Mistakes learners repeat on this topic

· Loading heavy items high or towards the rear of a trailer
· Assuming a stabiliser corrects a badly distributed load
· Believing the passenger is responsible for a child's seat belt
· Forgetting that a roof load raises the centre of gravity in crosswinds

Instructor tip: Any snaking-trailer question resolves to slowing down gently — never brake hard or accelerate out of it.

How this comes up in the real test

Questions from vehicle loading appear throughout the 50-question multiple-choice section, and the wording changes between versions. Learn the rule rather than the sentence: the DVSA can ask the same point from the opposite direction, and a memorised answer falls over the moment the phrasing moves.

The pass mark is 43 out of 50, so seven wrong answers is your entire margin. If a whole category is shaky, run the topic practice below until you are getting every question right for the right reason, then go back to full mocks under the clock.

Practise Vehicle Loading Sit a full mock test