There is hardly anything more chilling for a driver than the moment when the steering wheel suddenly “goes light” in his hands during a heavy rain. That specific feeling that the car is no longer under your control, and slides like a sled, has a well-known name - aquaplaning. However, technical experts warn that this phenomenon is not just bad luck, but a direct result of the condition of your car's tires.
At a speed of just 60 km/h on wet pavement, tires with seriously worn tread lose resistance twice as fast as their brand new counterparts. When a thin layer of water slips between the asphalt and the tire, traction evaporates in an instant. In this situation, the car becomes completely deaf to the driver's commands - neither the brake nor the steering wheel can change its trajectory. Dangerous? To put it mildly.
The magic of safety lies in the hydrodynamic design of the tire
The longitudinal grooves and transverse lamellas work in sync like a powerful pump that pushes the liquid out of the contact patch. “Each curve and each block of the tread are designed with one goal - to dry the road beneath them in milliseconds,“ experts explain. However, as the grip thins, this mechanism fails, leaving the car at the mercy of the elements.
Although the law allows summer tires to be driven up to quite critical millimeters of tread, experts advise not to play with fire. Professional advice is clear: if the depth drops below 4 mm, the ability to drain water is fatally impaired. Many modern models have special indicators that will tell you when it is time for new tires. Don't wait until the last minute, because on wet roads the difference between safety and an accident is often just a few millimeters of rubber.