Match each tyre condition or scenario to its corresponding legal implication, consequence, or required action according to UK road safety regulations.
- Tread depth measures 1.4mm on the outer edge, but maintains 1.8mm across the central three-quarters of the tread breadth around the entire circumference.The tyre complies with minimum UK statutory tread limits and remains legally permissible for use.
- A deep sidewall cut exposes the internal cord fabric, although the tyre completely maintains its recommended cold pressure for maximum load.The tyre is legally defective regardless of pressure retention and requires immediate replacement.
- A space-saver spare wheel is fitted to the driven axle to replace a punctured tyre while travelling on a high-speed dual carriageway.The vehicle is restricted to a maximum speed of 50 mph (80 km/h) and the wheel must be replaced at the earliest opportunity.
- Continuous and severe steering wheel vibration is experienced primarily when driving at high cruising speeds.This condition typically indicates unbalanced wheels and will accelerate abnormal tyre and suspension wear if left untreated.
Cevap
The correct pairings match the 1.4mm outer edge tread to remaining legally permissible, the cut exposing cord to being legally defective, the space-saver spare to a 50 mph restriction, and the steering vibration to unbalanced wheels.
Each match correctly applies UK road traffic law and mechanical principles: 1.6mm tread is only required in the central three-quarters; exposed cords make a tyre illegal regardless of pressure; space-savers have a strict 50 mph limit; and steering vibration indicates wheel imbalance.
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Anahtar Kavram
Statutory requirements for tyre condition, tread depth limits, and temporary wheel restrictions.