F1 cars are all over the world, so why change tires so often during races?

We all know that the speed of Formula 1 racing is very high, and in such high-speed driving, the wear caused by wheel friction is very serious, and the heat generated by tire friction can also cause damage to the car itself.

Because Formula 1 is a high-speed race, the track places very high demands on the car, including the tires, which are also prone to wear and tear.

Tyre changes are also one of the best ways to reflect a team's level, and Ferrari, for example, is particularly poor at changing tyres.

The FIA stipulates that you must use at least two sizes of tires unless you are using wet tires, so you must change tires at least once during the race. Frequent tire changes? It's either a faulty car or a faulty tire.

The speed of the car is too fast to produce high temperature, and if it is not replaced in time, it is easy to cause accidents.

Why do F1 cars change tyres so often? Here's a secret about tires and temperature.

Mainly for ornamentality.

F1 race, usually have different tires to deal with different road surfaces, rainy days with pattern "rain tires", when the road surface is dry, use "bald tires", usually according to the amount of water on the road surface or the amount of rain to decide to use different pattern tires, to ensure that when it rains without a pattern of tires on a rainy day, there will be a layer of water film between the tires and the road surface, the car is like floating on the water, it is easy to get out of control. At this time, it is necessary to use tires with a tread, and the edge of the tread can cut off the water film so that the water from the wheel rotates at high speed, which will also generate a gyroscopic effect and have a stabilizing effect on the car. The larger and heavier the wheels, the higher the gyroscopic effect, the stronger the stabilizing effect on the body, and the better the stability of the car at high speeds.

<> F1 cars are divided into two main types of tyres, dry and wet. Among them, there are 4 types of dry tires and 2 types of wet tires. They are suitable for different weather conditions, track characteristics, and team tactics.

Even if pressure-resistant and wear-resistant materials are used, the durability of F1 racing tires cannot be compared with civilian car tires, after all, the road conditions and environment they face are different. F1 racing car in the high-pressure and high-speed race, the tires have to withstand high-pressure and high-intensity friction and even bald tires can only be used for track racing, it is strictly forbidden to use on the general road, because in daily life such tire wear is very serious, usually a year's tire money is enough to buy a car, which is why F1 frequently in and out of the pit to replace tires.

The hard tyres were changed from silver to striking orange during the 2013 season. At the same time, compared to the previous hard tyres, this year's hard tyres are slightly softer. Hard tyres are more suitable for tracks with higher temperature requirements.

One thing, we have to understand, you can only adapt the tires to the track, it is impossible to adapt the track to the tires. In other words, soft tyres should be used in places with low speeds, many curves, and slippery roads, such as the Monaco street circuit; At high speeds, where there are few bends and the road surface is rough.

Racing tires are made with more than 100 substances, sometimes more, but there are only three of the most important ones: carbon, oil and sulfur. The hardness of the tyre has a big impact on the final result of the tire, and the structure of the tyre is always subtly improved as the race develops.

The frame of the tyre is made of a complex mixture of nylon and polyester, because the tyre must have sufficient rigidity because the tyre has to cope with strong aerodynamic drag (more than 1 ton of strong airflow at a speed of 250 km/h), strong longitudinal drag (4g) and strong lateral drag (5g), as well as the occasional strong impact from running over the side of the track. In dry climates, the main problem with this type of tire is the deformation of the rubber between the grooves, because it is impossible for the car to adapt to the characteristics of all tracks, so in this regard, how to make the tires suitable for a variety of tracks is again a nerve-wracking problem.

The tires of F1 cars are made of rubber, and the reason why they are not wear-resistant is that they are deliberately done to melt when they overheat, creating a stronger grip and are specially prepared for F1 cars.

These tires are made of hot melt adhesive, which is characterized by the fact that they become softer when heated, gaining more grip and more wear after driving.

In addition to the hot melt adhesive material, F1 racing tires also have carbon fiber, which can be said to be very wear-resistant for open cars, which is only relative.

If the rules allow one tire to the end, it is estimated that one tire can run for the whole season.

There is no doubt that racing is a speed competition, and the time to change tires is also counted in the results, and the slow change will affect the results, plus the tire change work is carried out by two or four people at the same time, and the tools used are all efficient tools.

The speed of the car is very fast, the tire will produce a lot of heat when it is rubbed at high speed on the ground, the tire temperature is too high for a long time is very dangerous, and the intense sports like racing are very fast to the consumption of the tire, after running a certain distance, the performance of the tire in all aspects will be reduced, and the handling will be greatly reduced at high speed.

Extended content

The Formula One World Championship is the highest level of motorsport in the world today, with an annual viewership of 60 billion people.

From 1894, when the first automobile race in history took place (Paris to Lyon), until 1900, the word "formula" did not appear. At that time, automobile races were simple, and they were divided into groups according to the method of combustion (gasoline engine vs. steam engine) and the number of seats. At that time, cars had at least two seats, and it was not until the end of the twenties that single-seaters appeared.

F1 races take place on more than a dozen enclosed loops around the world (including professional circuit circuits and individually closed city streets), starting and finishing on a single line. The tracks are made of modified asphalt and each track varies in circumference, with the shortest being the "Monte Carlo Circuit" in Monaco with a lap length of kilometres, and the longest being the Belgian "Spa Autodrome" with a lap length of 7 kilometres.

1. On the one hand, the reason is because of the wheel structure, and on the other hand, because of the performance of the car.

2. The diameter of the tires used in F1 racing cars must be strictly controlled, the diameter and width of the tires are accurate, and there should be four symmetrical longitudinal deep centimeter grooves on the tread, arranged from the center of the tires outward, and the distance between each groove must be accurate, the main purpose is to prevent accidents from causing major problems.

3. The tires used in racing cars are different from those used in family cars, and the hot melt tires used in racing cars are generally used, and the tires need to reach a certain working temperature before the friction coefficient between the tires and the ground will increase, and the vehicle can obtain faster cornering ability.

4. Because the speed of the racing car is relatively fast, from the perspective of ornamentation, the tires are not so wear-resistant, and the speed of tire decay will become faster during use, so the tires need to be replaced frequently.

5. With the continuous use of tires, the surface of the tires will be granulated and fall off, resulting in the smaller or unstable contact area with the ground, which makes the grip of the tires drop significantly, whether in the state of cornering or cornering, the speed of the car will be limited to a certain extent.

Because the time to change tires is also included in the race time, the time lost or regained in the process of changing tires can be roughly inferred by counting the time of tire change for each car. As for being suspended for changing tires for too long, it seems that there is no such rule.

F1, the Chinese name is "Formula 1 Championship", is the abbreviation of English Formula 1 Grand Prix, the official full name of this competition is "FIA Formula 1 World Championship" Formula 1 World Championship. A car built with a common formula (rule limit) is called a formula car, and the highest class is F1.