DGT B licence questions: Tyres and grip

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Question index View topic Practise Tyres and grip

In a fall while riding a two-wheeled vehicle, the helmet...
You park a car-and-trailer combination on a substantial uphill slope beside a kerb and will leave the driving position. Without suitable…
When the tyre inflation pressure is lower than recommended...
A two-wheeled moped is required to have...
There is ice on the road. What should you do?
What are wheels called according to their function of guiding the vehicle by changing their angle through the steering system?
What consequence occurs if tyre pressure is lower than required?
If you are riding your motorcycle in heavy rain, is there a danger of "aquaplaning" occurring?
In a passenger car or other vehicle covered by a B licence, correct tire pressure:
In a radial tyre, which two areas behave more independently because of its construction?
From 1 January 2026, must a Spain-registered car carry triangles as the mandatory device for warning of an immobilisation due to a…
In a passenger car with removable wheels secured by bolts or nuts, to which component is the rim normally attached?
In a tyre assembly fitted with an inner tube, which of these items does NOT belong to the assembly?
What characteristic sensation may a driver experience during aquaplaning?
When a tyre's rubber hardens with age, is this dangerous?
When a vehicle's tyres wear unevenly, it could be...
On a snowy climb, should you avoid unnecessary abrupt gear changes that could make the wheels slip?
What can heavy rain reduce concerning what the driver sees?
Which of these functions is NOT performed by a tyre?
Which part of the tyre tread pattern helps evacuate water from the contact area with the road?
With the same tyres and otherwise equal conditions, which dry road surface normally provides better grip?
When an authorised anti-slip device compatible with the vehicle is required for driving on snow, which of these may be used?
On a snow-covered road, a car has no special tyres legally able to replace chains. When must it fit chains to continue?
When driving on a snow-covered road, slopes should be climbed...
What effect does aquaplaning produce?
What are tyres designed to operate without a separate inner tube called?
In a vehicle with a front engine and gearbox and rear-wheel drive, which component transmits rotation from the gearbox output to the rear…
The tyre inflation pressure must be checked…
During aquaplaning, which components lose effective contact and grip with the road because of a layer of water?
If you discover damage or a puncture in a tyre, what should you do?
In a pressure-lubricated engine, which component pumps oil into the lubrication passages?
From 1 January 2026, which breakdown-warning device must a passenger car registered in Spain carry?
What is the limit of a vehicle's braking?
Must a motorcycle carry a V-16 breakdown-warning beacon?
Which driving habit can accelerate tyre wear?
How can defective shock absorbers affect braking?
If engine power is transmitted only to the rear wheels, what drive layout does the vehicle have?
Can an inappropriate pressure difference between tyres on the same axle impair vehicle handling?
Which road-surface condition favours aquaplaning?
When riding a motorcycle, if the road is wet, how should you take a bend?
When approaching a sharp bend during preventive driving, with no emergency inside it, when should you perform the braking needed to reduce…
Excluding the regulatory exception for certain historic vehicles, what is the legal minimum depth in an M1 car’s main tyre tread grooves?
On a snow-covered carriageway, can abrupt or improper use of the brakes cause a skid?
To check pressure against the manufacturer’s recommended cold value, in what condition should tyres be measured?
Is it permitted to drive normally with a temporary-use spare wheel?
When carrying out emergency braking in a vehicle equipped with ABS, you must press...
A tyre has greater tread wear in the centre than at the shoulders. Which pressure problem may have contributed?
Which pressure does a vehicle’s TPMS monitor?
At the same speed and in otherwise comparable conditions, how should you adapt the following distance when the road changes from dry to wet?
What does the word "tubeless" written on the sidewall of the tyre indicate?
Do textile devices exist for improving grip when driving on snow?
Is it compulsory to carry a spare wheel in a car?
Which of these causes a tyre to deteriorate quickly?
Under the General Vehicle Regulations, where does a motorcycle with a sidecar carry its single registration plate?
On the open road, which measure helps reduce a passenger car’s aerodynamic drag and fuel consumption?
With the same vehicle, speed and tyres, comparing the same pavement type, which condition usually favours more effective braking?
In a passenger car or other vehicle covered by a B licence, poor tire condition can:
Can fallen leaves on the carriageway affect driving?
In the event of rain, is it advisable to increase the safety distance from the vehicle travelling ahead?
Does the condition of the tyres affect the braking distance?
Which is NOT a function of the wheel-and-tyre assembly?
In rainy conditions, how well do the vehicle's wheels grip the road?
Understeer develops in a bend: the front tyres lose grip and the vehicle runs wide. With no immediate need for emergency braking, what…
The main cause of accidents due to a vehicle's mechanical failure is...
Which of these is NOT a structural component of a tyre's casing?
What function does suspension in good condition perform?
Which of the following is the correct tyre pressure?
Regarding a passenger car, correct tire pressure:
While a car wheel turns, what movement does the rim make relative to its axis?
On snow, in a manual car that permits it, how should you move off to reduce wheelspin?
In a conventional five-speed manual gearbox, with the same engine torque, which pair multiplies torque at the wheels most?
Must tyre pressure be checked before starting a long journey?
What does it mean that a tyre bears the marking "M+S"?
What should we look for when inspecting a tyre?
A four-wheeled car has all-wheel drive when its system can transmit driving force...
In a passenger car, how should tyre pressure be checked periodically?
What is the purpose of a tyre's tread?
If you have to ride your motorcycle through a particularly slippery area, what precautions should you take?
How does rain affect the road on which we are travelling?
You fit a normal full-size spare wheel identical to the others. Before driving, what pressure should you set?
In the tyre size 205/55 R16, what construction does the letter R indicate?
What conditions must motorcycle tyres meet?
During emergency braking in a car equipped with ABS, how should you use the brake pedal?
During gentle straight-line braking in a car on level ground, which axle gains vertical load compared with before braking?
Which dangerous effect can faulty shock absorbers cause?
Excluding the regulatory exception for certain historic vehicles, for an M1-category passenger car, what is the legal minimum depth of the…
What effect does aquaplaning have on tyre contact with the road?
At what inflation pressure should a vehicle's tyres be kept?
Excluding the regulatory exception for certain historic vehicles, which of these vehicles must have at least 1.6 mm tread depth in its…
What problem can an under-inflated tyre cause?
What is the phenomenon called in which the tyre's surface grips the road surface?
What circumstances can cause tyres to wear more than usual?
Which of these components contacts the road and, through its elasticity, helps cushion small irregularities?
A driver who checks their tyres regularly can...
Why should tyre pressure be checked when the tyres are cold?
On a snow-covered road, can following other vehicles’ tracks be advisable if they are not icy or otherwise hazardous?
A parking bay’s lines form an oblique angle with the kerb, other than 90 degrees. How should the vehicle be aligned within the bay?
On a car, what safety advantage may a tubeless tyre offer over a tyre with an inner tube after a small puncture?
If there are puddles of water on the carriageway...
During emergency braking with ABS, if the brake pedal vibrates, you must...