[China Aluminum Network] It is not unfamiliar to mention aluminum alloy wheels. When buying a car, it will be weighed and compared by consumers as an important reference indicator for appearance and configuration. In fact, I completely agree with this approach, because the aluminum wheel hub has the advantage that the steel wheel hub cannot match, has the greater influence to the future driving. We usually have more contact with the appearance and size of the hub. As we all know, if you increase the tire width can bring better braking and handling performance of the vehicle, so some consumers will also consider replacing the wider tires when the original tires reach the end of their service life. Then we need to understand the hub's The width dimension and the tire it can match.
The manufacturing process and inspection process of aluminum alloy hubs are much more complex than steel hubs, and the wheels of various automobile brands are manufactured by some professional manufacturers for their OEMs, so even the original hubs have their own brand manufacturers. Today I have selected six representative models from different manufacturers and nationalities from compact cars to see what secrets are hidden behind their aluminum alloy wheels. Before we explore, let's take a look at the knowledge of aluminum alloy wheels.
â— The advantages of the aluminum alloy wheel The wheel consists of a wheel hub and a tire to support the weight of the entire vehicle. The size and width of the aluminum alloy wheel directly affect the size of the tire, and the size of the tire has an important influence on the performance of the vehicle. Aluminum alloy wheels have many advantages over steel wheels.
First, good heat dissipation: aluminum alloy heat transfer coefficient is three times larger than steel. The friction between the tire and the ground and between the brake disc and the brake pad during the running of the car generates a very high heat, which may cause the tire and the brake pad to age and accelerate the wear, and the braking performance will be drastically reduced due to the high temperature. Tire pressure will also increase there is a puncture hazard. Aluminum alloy wheels can transfer this heat into the air faster than steel hubs, increasing the safety factor.
Second, light weight: the proportion of aluminum alloy wheels is less than steel wheels, each on average about two kilograms lighter than the same size steel wheels, in addition to spare wheels can reduce the weight of eight kilograms; lighter wheels can also reduce start-up and acceleration The resistance, the two together make the vehicle more fuel-efficient.
Third, the high precision: Aluminum alloy wheel casting precision is much higher than the steel wheel hub, out-of-roundness and unbalanced weight is small; In addition, aluminum alloy's small elastic modulus, vibration resistance is superior to steel wheels. These two items can effectively reduce vehicle vibration and make driving more comfortable.
Fourth, more beautiful: aluminum alloy in the liquid state of high temperature fluidity and tension better than steel wheels, polishing and plating process to enable it to produce a more beautiful and changeable appearance; surface anti-corrosion treatment and electrostatic powder coating It also makes it last as new.
â— Wheel related parameters A small car wheel contains many parameters, such as size, form, side slot level, load-bearing level, hole spacing, offset, etc. If not, we only need to know the hub diameter and width dimensions. Calculate the tire size that matches it.
The diameter of the hub and the width of the section are included in a set of numbers that usually consist of two sets of numbers and letters. As shown, the diameter of the 16-finger hub at the beginning of this group of 16X6J characters is in inches. This is what we normally call a 16-inch wheel hub. The third number refers to the width of the section of the hub, in the same unit of inch. The larger the value, the wider the tire. These two numbers are more commonly used. The X in the middle is not the concept of length and width that we usually understand, but it means that the wheel is designed as a deep grooved wheel and is usually used for civilian vehicles, while large-scale trucks and specialized wheeled machinery use half Deep groove or flat bottom hub. The latter letter J represents the hub edge height level, which is more commonly used. In addition there are D, K, E, L and other levels.
â— Brands of aluminum alloy wheels The wheel brands we know well are mainly from Europe and Japan. Companies such as Germany BBS, RONAL, and Italy OZ are all private companies. Most of them are started by hand. Japanese ENKEI and TRD are subsidiaries of Honda and Toyota, and Japanese wheel companies are mostly established in this form. The domestic group manufacturers that specialize in the production of aluminum alloy wheels have already extended their reach to world-class brands such as Mercedes-Benz and BMW. Their sales are also among the top few and even globally, but even so, their popularity is far from that of foreign companies. . The reason is that they only focus on providing OEM products for each depot, and rarely produce wheels with their own brand characteristics, and they do not involve motor sports and vigorous publicity. The representative domestic wheel hub manufacturers are as follows:
CITIC Dicastal: Dicastal was established in 1988 and is one of the larger aluminum alloy wheel manufacturers in China. It is controlled by CITIC Holdings, which owns six member companies. The company provides aluminum alloy wheels for domestic FAW-Volkswagen, Shanghai Volkswagen, FAW Toyota, Guangzhou Honda, BMW Brilliance, Changan Suzuki and U.S. General Motors, Ford, Chrysler, Mercedes-Benz Germany, BMW, Audi and other depots. In 2008 and 2009, sales exceeded Japan's ENKEI to achieve the world's top position.
Wanfeng Aowei (ZCW): Wanfeng Aowei is a subsidiary company of Wanfeng Auto Group. It was established in 1998. The company has three production bases and has become an OEM supplier for U.S. General Motors, Ford, Volkswagen, France PSA, Mazda Japan and some domestic joint venture brands.
Lizhong (LZ): Lizhong Wheel Group was incorporated in Singapore in 2004 and has seven factories in Baoding, Qinhuangdao and Tianjin. In addition to a large number of exports, it also established long-term supplier relationships with Shanghai Volkswagen, FAW Toyota, Changan Mazda, Zhengzhou Nissan, and Great Wall.
Zhongnan Aluminum (ZNA): South China Sea Zhongnan Aluminum is a large foreign-invested enterprise established in 1990. The company is a nationwide enterprise that can produce large volumes of automobile and motorcycle wheels at the same time. They provide aluminum alloy wheels for FAW-Volkswagen, Chery Automobile, Shenlong, Geely and others.
â— The secret behind the aluminum alloy wheel Before mentioned, the parameters and brand of the aluminum alloy wheel are printed on the back of the wheel hub. Usually, we hardly see it. Turning the wheel back and checking it carefully will reveal a lot of signs and characters on the spokes. Not only will the previously mentioned dimensions, brands, etc. appear here, but also a lot of information such as production date, origin, etc. can be found.
◠Precautions for tire replacement When replacing the tire, the tire must first pay attention to the size, width, and flatness of the tire to match the hub. These three values ​​can be found in a set of characters printed on the tire wall, such as 205/55R16. 205 This three-digit number represents the width of the tire; the middle two-digit number 55 is the tire flatness ratio; the last two digits 16 are the inner diameter of the tire.
The tires with inner diameters of 15, 16, and 17 can only be mounted on wheels of 15, 16, and 17 inches, respectively, which is easy to understand. The tire width also needs to be matched according to the hub width. For example, a 6-inch wide wheel safe tire width range is 175-215; 6.5-inch is 185-215; 7-inch is 195-235 and so on. This does not have a regular pattern of wheel hub and tire diameters, so consult with a professional tire manufacturer before installation.
Flatness also follows safety rules. The ratio of flatness is the ratio of the height and width of the section of the tire wall. If the ratio of flatness does not change when the width of the tire changes, the result is that the outer diameter of the tire changes. The safe range of tire outer diameter cannot exceed plus or minus 3% of the original tire's outer diameter. For example, when the 205/55R16 tire is changed to a wider 215/55R16, the outer diameter increases from 631.9mm to 642.9mm, and 11mm changes within a safe 3% range. At the same time, when the speed of the vehicle will increase due to the constant speed, the speed value displayed on the speedometer will be 2 km/h slower than the actual speed.
â— The FAW-Volkswagen Golf 2011 1.4TSI 16-inch aluminum alloy wheel golf has performed well in the compact car market with its excellent quality and popular brand influence. The sixth generation of golf has changed greatly in appearance and interior compared to the old models. The TSI+DSG powertrain is fuel efficient, and maintenance costs are greatly reduced. Compared to the GTI version of the Ordinary Golf, it is more home-oriented. The 2011 1.4TSI models are priced from 13.58 to 168,800 yuan.
The 2011 1.4TSI models are equipped with 16-inch 10-spoke twist-shaped aluminum alloy wheels, which are different in appearance from the 1.6-litre naturally aspirated models. Its brand is CITIC Day Card. Theoretically, the greater the number of spokes, the stronger the strength of the hub, but the difficulty in casting and the high cost. The wheel has a diameter of 16 inches and a good visual effect. The width is 6.5 inches. The original factory uses 205 tires, and the grip performance is better than that of the ordinary 195 tires, making the brakes and controls all perform well. The size of this hub is a medium level among the six models, and the market price is about 600 yuan, which is a relatively expensive product.
The original car 6.5-inch wheels with a tire width safety range of 185 to 215. In order to improve braking and handling performance, the tires can be upgraded to 215, with a more appropriate tire size of 215/55R16. As the tire widens, the diameter increases a few millimeters together, making the new tire's speed on the speedometer 2km/h slower than it actually is.
â— Chevrolet Cruze 2011 1.6T SEMT 17-inch alloy wheels Cruze stylish, dynamic, new 1.6T turbocharged models reached 135kw, better than Ashkenazi 1.8T models. And this engine is only matched with a six-speed manual gearbox. The interior is also more radical than the old one, and its sporting characteristics are obvious. The 1.6T is also equipped with a 17-inch aluminum alloy wheel and a 225-inch wide tire that are not naturally aspirated at the same time as the power is increased, resulting in a more balanced performance. The price of 159.9 thousand yuan is very competitive in front of opponents of other major sports.
The 1.6T model is equipped with a unique 17-inch 5-spoke aluminum alloy wheel, and the 7-inch hub width is matched with a 225-wide tire that emphasizes performance. Compared to the aggressive size, this wheel's shape is very boring. The brand is manufactured by CITIC DeKalb just like golf. The original tire width ranks among the top six in the same category as the Sagitar Champion Edition.
The 7-inch hub width matches the tire's safety range from 195 to 235. To pursue a higher level of performance, the tire can be replaced with 235 tires. The more compatible tire size is 235/50R17. The new tire diameter changes very little, indicating that the speed is only 1km/h slower than the actual speed.
â— Changan Mazda 32010 classic 1.6-liter models of 15-inch alloy wheels Mazda 3 launched in 2010 called the classic version of the small refit models, appearance and interior is not much different with the old models, surrounded by new designs before and after the listing Many years of old models rejuvenated, and its origin moved from Chongqing to Nanjing. The 1.6-liter model is priced from 11.28 to 128.8 thousand yuan.
The 2010 classic 1.6-liter model continues to use the older 15-inch wheels, but the style has changed slightly. This size is ranked lower in the six models, its visual impact is not more than 16 inches and above, from the 195/65 with the tire can also find this configuration is more comfortable. I did not find supplier information on the back of the hub, but the official brand given by the manufacturer is Lizhong. The market price is about 400 yuan, which is more economical.
This 6-inch-wide wheel allows a tire safety range of 175 to 215. Replacement of 215/60R15 tires is recommended, resulting in a significant increase in braking and handling performance. Since the outer diameter of the tire is increased, the outer diameter is increased by 4mm from the original car, so the displayed speed is 1km/h slower than the actual speed.
â— Dongfeng Peugeot 4082010 models 2.0 17-inch alloy wheels 408 from the PSA No. 2 compact model platform, is Dongfeng Peugeot for China to build a large space family sedan. Its wheelbase, powertrain, etc. are the same as Citroen Triumph. The trunk is in harmony with the body design, and the new interior is also in line with the aesthetics of the Chinese people. The security configuration and functions of the top models are richer. The 2.0-liter model is priced between 12.99 and 169,900 yuan.
The 17-inch 5-spoke aluminum alloy wheels on the 2.0 models are compact and full of tension, and the overall visual effect is good. The 17-inch diameter and 7.5-inch width are unmatched by five others. The hub brand is Wanfeng Aowei. The original car 215 tires are slightly conservative. The 7.5-inch width can hold 205 to 245 tires under the premise of safety. For a family car, 225 tires can achieve a good balance between performance and fuel consumption. If the pursuit of good performance can be boldly try 245/45R17 sports tires, although the fuel consumption has increased, but the cornering and braking performance will certainly be greatly improved. The market price of 600 yuan is more reasonable for a wheel of this size.
When replaced with a 225/50R17 tire, the speedometer shows 2km/h slower than the actual speed. Interestingly, Peugeot's hub style is named after a volcano: For example, this 17-inch wheel is called Rigaghi (volcano); the 16-inch model is called Sanchi (Volcano), which is named after other letters and numbers. Ways to be a lot of fun, can it be considered a French romance?
â— Dongfeng Yueda KIA Furui's 16-inch aluminum alloy wheels Kia Furui uses the same chassis and powertrain as the Elantra Yuet. Design master Peter Shriel gives it a more youthful and sporty style. Influenced by the brand awareness, this balanced car market is less responsive than the Elantra brothers. 10.98 to 13.98 million GLS and above models are equipped with 16-inch aluminum alloy wheels.
Furui's 5-spoke aluminum alloy wheels have a little shadow of the GTI tomahawk's wheels, and the blade-like wheel spokes are in line with the body's sporty style. 6-inch-wide manufacturers are equipped with 205 tires. About SKWC this brand of related information is very limited, only by the manufacturer in English full name "ShandongKoreaWheelCorporation (Shandong Daehan Wheel Group)", is a wholly-owned Korean wheel manufacturer, it is Dongfeng Yueda Kia, Beijing Hyundai and Japan Suzuki Waiting for the depot to provide products.
The hub can support 175 to 215 tires on the premise of safety. The replacement of the more appropriate 215/55R16 tires can improve the grip performance. The new tires display 2km/h slower than the actual speed.
â— Chery A3 16-inch aluminum alloy wheels are standard in all models. The appearance of the Chery A3 is designed by Pininfarina, and it also comes from the master's hands. A3 has made great progress compared to traditional self-owned brand cars in terms of interior details and manufacturing processes. The practical interior space and the relatively cost-effective configuration make it one of the more successful models in its own brand. The selling price is 7.48 to 102,800 yuan.
The Chery A3 comes standard with 6-spoke 16-inch alloy wheels produced by Zhongnan Aluminum and is simple in shape. The 6.5-inch width of the original selection of 205 tires. The hub market sells for about 350 yuan, which is very economical.
The 6.5-inch-supported tire has a safety width of 185 to 215 and can be replaced with a 215/55R16 tire without changing the hub to improve performance. After the replacement, the display speed is 2km/h slower than the actual speed.
â— Editor's summary In the field of civil automobiles, with the declining manufacturing costs, relatively obvious advantages, and higher consumer demand, aluminum alloy wheels have been accelerated from mid-sized cars to compact cars to small cars to accelerate the replacement of traditional steel from top to bottom. Wheel hub. In the past, we have seen that low-grade models often provide only steel wheels, which are now replaced by aluminum wheels. Steel hubs are not completely useless. Non-full-size spare tires are widely used because they occupy less space in the vehicle. Matching with steel hubs saves R&D and manufacturing costs.
Nowadays, when we buy a car, we not only stay at the superficial level of the appearance of the brand and the vehicle, but also care more about the true meaning of technology and quality. This rational progress not only allows consumers to obtain satisfactory products themselves; on the other hand, it also urges manufacturers to pay more attention to the control of product development and quality, and no longer only superficial articles, which virtually promotes the entire automotive industry towards healthy health. The direction of development.
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