Choosing a pair of good shoes is very important. Look at the tire knowledge you don't know. No matter how powerful the engine is, no matter how perfect the gearbox is, the key configuration for achieving performance is a tire. . Just as professional track and field athletes are very concerned about what kind of running shoes to use, the right tires are vital to the car, the speed is reflected by it, and the stability is achieved by it. The cross-country performance or cornering performance pursued by sports cars requires a large amount of material to be worshipped by tires.
However, whether the tire performance is excellent or not, it is difficult to be noticed before buying a car. Manufacturers often do not use more perfect tires for the cost control of the whole vehicle. They will make the vehicle comfortable, maneuverable and economical. Considering the selected loading tires, all aspects of performance are justified, but not the best. Shoes can be divided into dress shoes, casual shoes and sports shoes. In fact, the same is true for tires. Even tires of the same brand have different characteristics due to different formulas, patterns and structures, and have different application scopes.
Tire Basics Tire specifications are indicated by a set of numbers plus letters printed on the side of the tire. The first number indicates the section width of the tire; the second number represents the flat ratio; the third is the letter, indicating the structure of the tire, the next number refers to the diameter of the rim; the last number is a letter, representing the load factor and Speed ​​level. For example: 175/65R15 86H, indicating a tire width of 175 mm, a flat ratio of 65, and a rim diameter of 15 inches. The letter or symbol between the flat ratio and the rim, the most common is the "R", which is the same as the "Z", meaning the radial tire; the other, "X" is the high pressure tire; "one" is the low pressure tire; "B" Represents bias tires.
One of the important factors of comfort and stability: the width of the tire is common in the current model. The width of the tire section extends from 165 mm to 225 mm. The wider the tire section, the stability and comfort of the car is good, but it also brings power. The consumption and fuel consumption increase. Therefore, the width and width of any car's standard tires are determined according to the power, quality, size and price of the car. It is not that the wide tire has an absolute advantage. The pursuit of wide tires is not only the cost of purchase, but also the fuel consumption and acceleration performance. Not worth the candle.
One of the important factors of handling: the flatness ratio of the tire:
The flat ratio refers to the ratio of the tire cross-sectional width (W) to the tire cross-sectional height (H). Common ratios are 65, 60, and 55. The larger the ratio, the higher the height of the tire section, which is commonly known as the thicker the tire, and vice versa. This value represents the handling performance of the tire. When the driving vehicle needs to be turned, the steering motion of the driver is transmitted to the rim of the front wheel through the steering wheel, and the rim drives the wheel to realize the steering. The steering wheel is rigidly connected to the rim. The metal rim is between the rubber tire and the ground. It is a soft and inflated rubber body. There is a time difference. The thicker the inflatable layer of the tire, the greater the time difference.
Therefore, due to the need for handling agile, the inflatable layer is made as thin as possible, that is, the flatness ratio is very small, generally 45, 40 and 35. The tires are flatter than the smaller ones, and the comfort is slightly worse, but the control effect is excellent at high speed. The pursuit of comfort is generally 60, 65 tires, the flat ratio of sports tires are very small, sports-themed cars are often also used flat tires, such as the Audi A4L, one of which uses 40 tires.
Flat ratio (%) = H/W x 100
Tires are also speed-limited: Speed-level speed grades are the maximum speeds that tires can achieve under specified load and air pressure standards. Most of the models on the market are H and V. Some cars with superior performance are W and Y. However, as long as you are not on the track, approaching or achieving this speed, it is not only irresponsible to yourself, but also The threat of the safety of others. Seriously not recommended.
| Speed ​​level | Top speed (km/h)[/td] |
| N | 140[/td] |
| P | 150[/td] |
| Q | 160[/td] |
| R | 170[/td] |
| S | 180[/td] |
| T | 190[/td] |
| H | 210[/td] |
| V | 240[/td] |
| ZR | More than 240[/td] |
| W | 270[/td] |
| Y | 300[/td] |
| (Y) | More than 300[/td] |
| Aika car net watch |
One indicator that most people don't pay much attention to: the load index of a tire is the maximum load capacity of a tire under specified conditions. For small passenger cars, this number is not very important in most cases, especially the sedan, and there is not much room for overloading.
The tire brands are all foreign brands. The foreign tire brands in the passenger car market currently occupy a mainstream position in China. In fact, China produces a lot of tires, mostly concentrated in the commercial vehicle market. Although there are passenger cars, the market awareness and market share are not high. The main domestic tire brands include Huili, Linglong, Triangle, Fengshen, Double Star, Beijing Wheel, etc., especially the pull back and exquisite, can be equipped with all kinds of ordinary car tires, high-performance sports tires, etc., and the price is relatively cheap. . I have used 4 Beijing-wheel tires and ran nearly 100,000 kilometers to replace them. It is not necessary to replace them. It is necessary to go to Tibet for two months. In order to increase the safety factor, it is still economical. I chose the Beijing Wheel.
Foreign tire brands are currently established in most of China's major tire companies, such as Goodyear in Dalian, Pirelli in Jining, Dunlop in Changshu, Yokohama in Hangzhou, Michelin in Shenyang and Shanghai, Bridgestone in Tianjin, Shenyang and Wuxi and so on. These tycoons in the tire industry have a variety of products, and they have different product lines for the four orientations of modification, control, balance and comfort. For example, Goodyear's F1 series is the highest-end series of Goodyear, suitable for racing, and everyday driving is not practical. A friend once bought four Michelin-friendly tires. After 30,000 kilometers, it was smoothed. Originally, its comfort was soft and the material was not worn.
In addition, tires have a classification for various weather conditions. In theory, it should be dry tires on sunny days, water tires on heavy rain days, wet tires for light rain, and ice and snow tires on snow days. For the owners, it is too extravagant and too cumbersome to use tires so professionally. To achieve this, the home must first have a garage, there must be a warehouse next to the garage to store tires, and there must be a technician wearing a tooling in the garage. As soon as your car enters the door, the technician Lima runs over to open the door for you, and respectfully welcomes you into the mansion. Then, according to the weather conditions of the next day, put the right tires for your car. Of course, this is a joke. For the northern friends, if the economic situation and living conditions permit, it is very good to prepare a set of winter tires.
The main manufacturer's tire type Goodyear mainly has 8 different characteristics of the tire 1, for the sports car and coupe Eagle F1 GS-D3
This is a tire that exhibits good grip, braking and handling performance in dry and wetlands. It is mainly used in sports cars and coupes. The manufacturer claims to be the best flying boots.
There are many specifications, starting from 185/60R14-82V and continuing to 275/35R19-96Y, with 24 specifications.
2, Eagle F1 Asymmetric for sports cars and coupes
It is also a performance tire, asymmetric pattern and racing tire formula, which is the highlight of this tire, the manufacturer claims that its corner performance is outstanding. It can also be used on Audi A4, S8, BMW M3, Z4, Subaru Impreza, Jaguar XJ, Saab 9-3, Volvo S60, Cadillac SLS, etc. It can also be used in Bora, Passat, Fox, and Ma. 6 and upgraded tires for Civic.
Specifications from 205/45R17 84Y, the more common are 215/45R17 91Y, 225/45R17 91/94Y and 235/40R17 90Y, etc., until 265/35R18 97Y, a total of 14 models.
3. The Eagle NCT5 tires for mid-level and high-end cars are equipped with new environmentally-friendly silicone formulas, and the control and resistance indicators have been improved. They are available on domestic BMW, Audi, Passat, Accord, Sagitar, and Ma 6 models.
Specifications start from 195/50R15-82H, up to 245/45R17-95W, a total of 28 specifications.
4, the pursuit of comfort Excellence Three-energy tires have a strong shoulder pattern, the more the outer side is stronger; soft rubber pad can reduce noise, cushioning bumps, thus achieving comfortable driving. This is a relatively common one in China.
Specifications start from 195/65R15-91V, up to 245/45R17-99Y, a total of 16 specifications.
5, Ducaro GA tires for mid-range cars This tread pattern of the tires is arranged in anti-symmetric intercept, dispersing the resonant frequency and reducing noise, so it is known as the mute expert. It is equipped on several mainstream models in China.
The main specifications are 185/60R14-82H, 185/65R14-86H, 195/65R15-91H, 195/60R14-86H, 215/70R15-98H, 205/60R15-91H and 205/65R15-94H.
6, the EAGLE VECTOR 2+ tire for the mid-range car is different from the Ducaro GA tire. This is an all-weather tire. According to the manufacturer, it can be applied to various road surfaces such as dry, wet, ice and snow.
Specifications start from 185/60R14 82H, up to 225/55R16 95V, a total of 11 specifications.
7, Assurance tires for the mid-range car This Chinese name is the tire of the Ans Wheel, relatively common, it is based on the grip performance, and the tread strength is appropriately enhanced, and the wear resistance is also improved. A balanced economy tire.
Specifications start from 175/65R14 82H, up to 215/70R15 98H, a total of 18 specifications.
8, economic car tire GT3
This tire is economical and durable, mainly equipped with economical cars, such as Fit, Carnival, Vizi, Xiali and so on. Specifications start from 165/70R13 79T, up to 205/70R14 95T, a total of 9 models.
Michelin mainly has 5 series of tires 1 and pays attention to the comfort of PRIMACY LC. This tire is known for its low resistance and fuel saving effect. The quietness is also good, and the wear resistance is improved compared with the previous generation.
Specifications start from 195/50R15 82 V, up to 235/60R16 100 V, a total of 19 models.
2, focus on cost-effective ENERGY MXV8
Since Bo Yue, this once considered cost-effective tire has gradually lost its former aura.
Specifications start from 195/65R15 91 V, up to 235/60R16 100 V, a total of 28 models.
3, economical ENERGY XM1 + tire This tire pays attention to the economy, in terms of softness, resistance, cost and so on. Specifications start from 175/65R14 82 H up to 215/70R15 98 H for a total of 14 specifications.
4, Pilot Sport PS2
High-performance sports tires, whose tread pattern design and structure are directly derived from the Michelin F1 dry tire technology. The price is high, only suitable for enthusiasts.
5, Pilot Preceda PP2
The same is a dry tire, the handling performance is outstanding.
Pirelli has 7 series of tires 1 and a balanced P6
The tires that are economical, durable and comfortable are considered entry-level products in Pirelli, and the models are not high.
Specifications start from 165/60R14 75H up to 215/60R16 99H, a total of 16 specifications.
2, the pursuit of performance P7
Mainly for medium and high-powered car design, the pursuit of performance, dry / wet ground handling performance is good, including many tires with a flat ratio of only 40.
Specifications start from 195/55R16 87V, up to 235/55R17 99W, a total of 28 models.
3, P Zero System
A member of Pirelli's Pzero range with precise high speed stability and outstanding wet grip.
The main specifications are: 205/45ZR17 88W, 255/45ZR19 104Y, 255/45ZR17, 255/45ZR17 98Y, 265/40ZR17 96Y, 275/40ZR18 99Y and 335/35ZR17 106Y, a total of 7 models.
4.PZero Rosso
While pursuing high performance, it pays attention to a certain comfort. It is also ideal for upgrades and modifications.
Specifications are 255/35ZR19 (92Y), 225/35ZR19 (84Y), 255/40ZR18 95Y, 245/40ZR19 (98Y), 245/45ZR18 (100Y), etc.
5, PZero Nero
One of the choices that are keen to upgrade and refurbish, for lovers of control and speed fever.
Specifications start from 195/45R16 80V, the highest specification is 375/20ZR21 (103Y), a total of 28 specifications.
6, P Zero
A new member of Pirelli high-performance tires, with a flat ratio of only 55, only 3 models, the main focus is on 35, 40 and 45 flat ratio tires, the lowest flat ratio is only 25, the specification is 355/25ZR21 (107Y) As can be seen from this figure, it is not equipped for the general sports car.
Specifications start from 205/55R16 91V, the highest specification is 355/25ZR21 (107Y), a total of 78 specifications.
7, PZero Corsa System
The sporty tires of choice for super sports cars and racing cars.
Dunlop has 11 models of tires 1 and flagship SP SPORT MAXX
From 195/50R15 ZR/82W to 275/40R19 ZR/101Y, all 25 products are imported.
2, sports style DIREZZA DZ101
From 195/45R16 80W to 275/35R18 95W, all 18 models are imported.
3, VEURO VE301 for high-end cars
From 195/65R15 91V to 265/35R18 93W, a total of 24 models, 11 imported, 13 domestic.
4, SP SPORT LM703 for mid-range cars
From 195/65R15 91H to 215/60R16 95H, a total of 11 models.
5, SP SPORT 01
Designed for Toyota's Corolla, the 205/55R16 91V is just that.
6, SP SPORT 2030
Designed for Toyota's Vios and Airis, the 185/60R15 84H is just that.
7, LE MANS LM702
The economical, comfortable, durable and other indicators are as balanced as possible, including 215/65R15 96H, 185/60R14 82H and 195/60R14 86H.
8, SP SPORT RV502
Designed for the higher priority of SUVs, there are three specifications: 215/65R16 98H, 205/70R15 96H and 215/70R15.
9, SP 60e
Tires for economical vehicles, from 165/70R13 79S to 205/70R14 95H, a total of 12 specifications, all made in China.
In addition to the above, there are many foreign brands in the market, such as the German horse brand, Japan's Yokohama and Bridgestone, South Korea's Kumho and Hantai, and Taiwan's Federer. They also have their own characteristics and their own strengths. However, for most car owners, as long as they are not enthusiastic about driving, as long as the wallet is not too bloated, there is no need to upgrade the tires. The original specifications are used. At most, when replacing the tires, choose one that is slightly smaller than the loaded tires. A stronger brand can be. For example, Hankook Tire has the advantage of being wear-resistant. The disadvantage is that it is noisy. If you don't care about spending a little more money and want more comfort, you can make a choice in Michelin, Dunlop and Horse. If you want to spend less If you have more money, you can choose between Bridgestone and Pirelli or Dunlop.
If you are an enthusiast, you have to be different. Pirelli, Goodyear, Dunlop and other brands have their own flagship products. Buying four is up, and the performance is definitely improved. Who let the money be spent on that share?
Http://news.chinawj.com.cn Editor: (Hardware Business Network Information Center) http://news.chinawj.com.cn
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