Tyres and Wheels

The essentials

This topic presents the role of tyres and wheels in stability, grip and braking. The learner should pay attention to wear, damage, compatibility and conditions that can make the vehicle unsafe.

What to remember

Tyres provide the vehicle’s contact with the road, so wear, pressure and damage directly affect braking and stability. Tyres on the same axle must meet the required compatibility, and obvious cuts, separation or insufficient tread may be grounds for prohibiting operation. Check tyre pressure when the tyres are cold, using the manufacturer’s specified value.

Listen to the explanation

Educational material; not a substitute for the current official rules.

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A small practice set from this subtopic. The full question bank and saved progress are available in your account.

According to the RA Law "On Ensuring Road Traffic Safety", a moped is considered to be:
  1. A two- or three-wheeled vehicle with an engine capacity not exceeding 50 cc and a maximum speed not exceeding 50 km/h.
  2. A two- or three-wheeled vehicle with an engine capacity not exceeding 60 cc and a maximum speed not exceeding 60 km/h.
  3. A two- or three-wheeled vehicle with an engine capacity not exceeding 70 cc and a maximum speed not exceeding 70 km/h.

The correct answer: A two- or three-wheeled vehicle with an engine capacity not exceeding 50 cc and a maximum speed not exceeding 50 km/h.

The correct answer is “A two- or three-wheeled vehicle with an engine capacity not exceeding 50 cc and a maximum speed not exceeding 50 km/h.”. The correct option must satisfy every element of the definition, not merely its general idea.

Operation of vehicles is prohibited if:
  1. The engine runs irregularly.
  2. The tires have localized damage exposing the tire carcass (cord).
  3. The interior lighting devices of the passenger car cabin are not working.
  4. In all of the above cases.

The correct answer: The tires have localized damage exposing the tire carcass (cord).

The correct answer is “The tires have localized damage exposing the tire carcass (cord).”. The exact component condition and permitted limit are decisive; technical requirements differ by system. Remember the exact component and limit; numbers and conditions are decisive. The other options do not describe the exact condition or limit selected by the source as prohibiting operation in this task.

Operation of buses is prohibited if:
  1. The engine operates intermittently.
  2. The tires have localized damage exposing the tire carcass (cord).
  3. In both cases.

The correct answer: The tires have localized damage exposing the tire carcass (cord).

The correct answer is “The tires have localized damage exposing the tire carcass (cord).”. The exact component condition and permitted limit are decisive; technical requirements differ by system. Remember the exact component and limit; numbers and conditions are decisive. The other options do not describe the exact condition or limit selected by the source as prohibiting operation in this task.

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