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Difficulty: HardVehicle Adjustments for Heavy Loads (Tyres & Headlights)

When preparing a vehicle to carry a full load of passengers and luggage, the maximum inflation pressure embossed on the tyre sidewall should be used as the target operational pressure.

Answer: Answer

Answer

False. Drivers must consult the vehicle handbook or manufacturer information placard for laden pressures, rather than inflating to the maximum pressure stamped on the tyre sidewall.
The statement is false because the pressure figure molded into a tyre's sidewall is the maximum structural limit permissible for the tyre casing. The correct operational pressures for driving with a heavy load or towing are specifically calibrated by the vehicle manufacturer and must be retrieved from the vehicle handbook, tyre placard on the B-pillar, or fuel filler door.

Step-by-Step Solution

1
Identify the purpose of tyre sidewall markings.
The sidewall marking indicates the tyre manufacturer's maximum structural pressure and load capacity limit.
This is a universal safety limit for the tyre itself, not an engineered vehicle operating specification.
2
Determine the correct source for vehicle-specific operational laden pressures.
Consult the vehicle handbook, door frame data plate, or fuel flap label.
The vehicle manufacturer calculates exact front and rear tyre pressure increases needed for safe vehicle dynamics and stability under heavy loads.
3
Evaluate the truth value of the stem.
The statement is false.
Inflating directly to the sidewall maximum can lead to over-inflation relative to vehicle design, reducing contact patch and degrading grip and handling.

Key Concept

Tyre Pressure Specification Sources for Heavy Loads
Estimated Time:1m 0s
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Topics

Vehicle Adjustments for Heavy Loads (Tyres & Headlights)

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