Traveling by car? The GNR issues a warning about tires

Before setting off on a car journey, there is one check you should not forget: the condition of your tyres. The National Republican Guard warns about the importance of this component, especially during the summer, when high temperatures, longer journeys, and increased loads can contribute to greater wear and overheating.

Between January 1 and June 15, 2026, the GNR detected 4,187 offences related to tyres that did not meet the legally required conditions. Throughout 2025, 8,557 offences of this type had been recorded.

The figures relating to accidents also deserve attention. In 2025, 889 vehicles involved in accidents were found to have tyre defects. In the first months of 2026, up to June 15, that number had already reached 576 vehicles.

Why are tyres so important?

Tyres are the only point of contact between the car and the road. For that reason, their condition directly influences grip, stability, braking ability, and steering control.

Driving with worn, damaged, or incorrectly inflated tyres can increase braking distance and make it harder to control the vehicle, especially in the event of sudden braking, a sudden change of direction, or adverse weather conditions.

During the hotter months, the risk may increase. High road surface temperatures promote tyre heating and, when combined with inadequate pressure, excessive wear, cuts, deformities, or ageing rubber, can cause loss of grip or even a tyre blowout.

The load being carried should also be taken into account. On holiday trips, it is common to carry more luggage and travel with a heavier car. In these situations, tyre pressure should be adjusted according to the manufacturer’s recommendations.

What should you check before travelling?

Before starting a car journey, the GNR recommends a simple inspection of the general condition of the tyres. Start by checking the pressure, preferably when the tyres are still cold. The recommended values can be found in the car manual or in the information provided by the manufacturer, usually near the driver’s door or on the fuel cap cover.

Also check that the tread depth complies with the legal minimum limit and observe whether the wear is even. A tyre that is more worn on one side than the other may indicate alignment, suspension, or incorrect pressure problems.

Also carry out a visual inspection to detect any cuts, cracks, deformities, bulges, or objects stuck in the tyre. Even seemingly minor damage can worsen during a long journey or at higher speeds.

Do not forget to check the spare tyre, if the vehicle has one. It is also important to make sure you have the necessary equipment for a possible replacement or a repair kit in usable condition.

If it becomes necessary to change a tyre on a motorway, never remain in the traffic lane. Try to stop the vehicle in a safe place, signal the situation correctly, and contact the authorities or roadside assistance when there are no conditions to carry out the operation safely.

A check of just a few minutes can prevent problems during the journey and contribute to a more peaceful trip. Before putting your luggage in the boot and setting off, take some time to make sure your tyres are ready for the kilometres ahead.

Sources: Revista ACP, SIC Notícias, Jornal de Notícias