How do tire specifications affect car performance?

It is the size and model of the tire.

Let's talk about tire parameters first: the so-called parameters we can see for a tire are: brand pattern size load speed dot 3t, as for 3t, this is now almost no value in China, but in fact, it is an interesting reference for consumer terminal choice, in fact, the value of these parameters is mainly related to the cost, as for the impact, it is difficult to explain, let's poke the pain point.

Tire parameters have an impact on the car, but the specific impact varies from person to person, and even more so from car to car. First of all, the role of the tires: bearing, shock absorption, braking, handling.

On this basis, let's look at the corresponding impact: load: ordinary vehicles in tons, the vehicle has been designed at the beginning of the corresponding tire size and the relationship between the load, as long as it is not fully loaded, there will generally be no problem, unless you buy inferior tires shock absorption:

The feeling of shock absorption in ordinary vehicles comes from the driving feeling of potholes and tire noise, which does have an impact on the driving feeling of potholes, but the biggest impact is the overall vehicle design, which does not have to be considered too much. We feel that the impact is more due to tire noise, which really requires better product design and product materials, and the best one on the market is the Michelin brand. Braking:

The braking of the vehicle is related to the tires, mainly from the grip of the tires, as for the braking system of the vehicle in addition to the tires because of the different materials used in the vehicle, and the tires have a considerable impact on the braking, the braking can actually be effectively affected by the tires, the choice of good tires is indeed related to life, the current market brake better tire brands are: Michelin Goodyear Pirelli Continental imports Bridgestone imports Dunlop imports. Control:

The starting acceleration and turning of the vehicle are realized by the tires, and the importance of the tires for the handling is self-evident, but in fact, the so-called control of ordinary car owners is the traffic light start and simple overtaking, which is mainly related to whether the vehicle power is willing to give oil, and ordinary vehicles do not need to consider the so-called dry and wet land and other professional tire influences.

The size of the car tire and the flat ratio parameter of the tire will affect the passability of the car. The main performance parameters of the car passing are the minimum ground clearance of the car, the longitudinal passing radius and the transverse passing radius, the approach angle and the departure angle chatter, the minimum turning radius, etc., the front and rear departure angle chassis height driving and digging mode tire power.

Definition of car passability

Under a certain load mass, the ability of the car to pass through various bad roads and roadless areas and overcome various obstacles at a sufficiently high average speed is called the passability of the car, and the scattered parameters of the car are the geometric parameters of the car itself related to the prevention of gap failure, mainly according to the type of car and the conditions of use.

The former is to characterize the ability of the vehicle to pass through bumpy roads and obstacles, and the latter refers to the ability of the vehicle to smoothly pass through soft soil, desert, snow, ice, swamp and other grounds.

The geometric parameters of automobile passing are the geometric parameters of the car itself related to the prevention of clearance failure, they mainly include the minimum ground clearance, approach angle, departure angle, longitudinal passing angle, etc., in addition, the minimum turning diameter and inner wheel difference of the car, the turning channel circle and the wheel radius are also important contour parameters of the car passability, so it is said that the passing of the car can not be judged only by looking at the tire size.

Upgrade to a wider tread

Many low-end cars are equipped with narrow tires and upgraded to wide tires, which has an immediate effect on handling. The reason is not only that the tires are getting wider, but also because the narrow tires used in these low-end cars usually don't perform well. For example:

If the original tire is 165 80R14, if it is replaced by 195 55R16, the tire looks much wider, and it is definitely more stable at high speed and cornering, and the safety factor is higher.

Not wider is better

For some low-end cars, it is not safe to wear better tires. For example, the width of the original tire of a car is 145. What happens if you switch to 205-wide performance tyres?

One is that the car can't run because the resistance is too great; The second point is something that most people don't think of: it will be easier to roll over. Because the suspension of this kind of car cannot be supported, the cornering roll will be large, if the tire completely bites the ground, the tire will become a strong fulcrum when turning, making it easier for the inner wheel to get off the ground, and the amplitude will be large.

Continental CPC2 features a unique 3D tread groove design that maximizes braking performance on wet and dry surfaces and reduces hydroplaning. The asymmetrical pattern ensures maximum contact with the ground for improved handling stability.

Tires affect fuel consumption

Theoretically, the narrower the tyre, the lower the fuel consumption. However, it is important to remember that tire pressure also has a big impact on fuel consumption, because air pressure directly determines the ground contact area of the tire, that is, the amount of resistance. Now there are some new "low rolling resistance" tires, and the tread design minimizes rolling resistance, so it is not necessarily that the fuel consumption of the tire becomes wider.

changeLoading tires is not as big as possible

Modify and upgrade tires, don't think that bigger and wider is better. Wide tires look good, that's a fact. Especially with an oversized rim with ultra-thin tires, the whole wheel fills the wheel arch, which is really handsome.

But when you walk on a bumpy road, or when you cross speed bumps or press the curb, you know that it is not good, and the tires are easy to rub and interfere with the wheel arches. Moreover, even if the outer diameter of the replacement tire remains the same and does not affect the acceleration performance, it is necessary to take into account the change in tire thickness, shock absorption efficiency, and steering response will change.

If it is a good car with very precise and balanced chassis tuning, after the tires are changed like this, the texture of the entire handling and the characteristics of the suspension will change. It doesn't necessarily get better, but more worse, because the amount of work borne by the suspension and shock absorption is different from the original, which destroys the balance of the original car. This is more esoteric, simply put, most of the upgraded big tires actually make the car's handling and driving performance worse.

Introduction to the influence of automobile tires on the performance of automobiles: 1. Flat ratio: Flat ratio: Flat ratio of tires, also known as height and width ratio, as the name suggests, is the ratio of tire height to width.

The smaller the aspect ratio, the flatter the tires, and the better the car's handling stability. 2. Tire pattern: The original intention of the tire design pattern is to increase the friction between the tire and the ground, so as to prevent the tire from skidding, but at the same time, it also improves the performance of the car related to friction such as power and handling.

3. Tire pressure: high tire pressure within the safety range will reduce tire friction and adhesion to the world, improve fuel economy, but have a certain impact on braking effect; Low tire pressure will cause fuel consumption to become heavier in the upward direction, but it can increase the tire recovery torque; Tire pressure that is too high or too low will damage the tire, affect its life, and may cause a puncture.

1) Excellent wear resistance to improve the service life of retreaded tires.

2) Good driving performance can adapt to the needs of various road surfaces and vehicle and tire use conditions, and will not cause early damage.

3) Low rolling resistance (can save fuel consumption, reduce the temperature of the driving tire, and improve the safety of the tire).

4) The raw materials used should meet the requirements of environmental protection; It will not cause damage to people in contact and pollute the environment.

5) The pre-vulcanized tread should have good aging resistance and adhesive performance, so as to prevent the retreaded wheel from being used to the late tread aging and extricating from the carcass.

6) In order to prevent the pre-vulcanized tread from collapsing and falling off during use, the flexural resistance of the rubber compound is also an indicator of people's attention.

It can be understood from the meaning of the parameters:

Tire specification gear is 195,65,R15,91,V, where 195 indicates the width of the tire is 195 mm, 65 shows the cross-sectional height of the tire, that is, the percentage of the thickness and width of the tire is 65 percent, that is, the flat ratio of the tire, R means the radial tire, 15 means that the diameter of the rim is 15 inches, 91 represents the load index, and V represents the allowable speed grade of the tire.

Common tire speed markings are: P for 150 km/h, S for 180 km/h, T for 190 km/h, H for 210 km/h. If the tyre does not have a speed marking, unless otherwise specified, the maximum safe speed is generally considered to be 120 km/h per hour.

Automobile tire structure classification: it can be divided into radial tires and bias tires.