Many times, when it comes to the size of the hub, we want the hub to be as large as possible. While it only looks beautiful and premium, some people tend to opt for a smaller hub. This seems unreasonable to many people, but there are corresponding reasons. Increasing the car wheel hub does not change the maximum diameter of the tire, so in theory the owner can replace the car wheel, but the law does not allow this. Tall cars are always prettier than low cars, and wheel hubs are the key to tire value. Many young people like 18-inch, 19-inch, 20-inch and other large-size wheels, and some people think that large wheels will be transformed into atmospheric, sporty or even larger size forged wheels. But old drivers who pursue practicality prefer small wheels, and 17 inches is more suitable. Do you want to buy a car with big wheels or small wheels?
Because the change of wheels will destroy the mechanical balance of the whole vehicle, it will bring unnecessary safety hazards. First of all, the larger the wheel hub of the car, the smaller the thickness of the rubber tire cushion. I understand that. Because the overall diameter of the tire does not change. No matter how big the hub is, the rubber tires on the outside have to shrink. Otherwise you may not be able to get in. Therefore, in the case of the same car maintenance quality and maximum speed, it is not recommended to replace the large wheel. If the shock absorption effect of the tire is reduced, the wheel hub is easily damaged in extreme road conditions, which also has a great impact on the riding comfort. In addition, when the hub becomes larger, the quality of the tires will increase. The wheels are aluminum alloy, but the extra mass increases fuel consumption. People who know cars are most concerned about economics. They understand that buying a car means peace of mind, saving money, convenience, and not spending a lot of money for aesthetics.
The big hub is also an important means for 4S stores and manufacturers to cut leeks. With the same configuration, as long as you choose a large hub, you can add a few thousand yuan. The money really isn't worth it. People who know cars like to choose low-priced cars, and certainly like wheels from 17 inches to 16 inches. Hubs increase fuel consumption. This is because the width of the tire becomes wider, and the grip and maneuverability of the tire increase while the friction increases. People who study physics know that the greater the friction, the more energy naturally it consumes, and for the car the energy is gasoline. In addition, in the case of an unexpected increase in the weight of the large wheel hub, every 1KG reduction in the weight under the spring is equivalent to a reduction in the mass on the spring of 15KG; in general, for every 1% reduction in the mass of the car, the fuel consumption will be reduced by 0.6% to 1%, as mentioned above, the larger the wheel hub, the higher the fuel consumption.
The larger the hub, the wider the tire. That is to say, the tire contact area of the large wheel hub is larger, so the friction is greater. There is no reason why fuel consumption should not rise. This is also a problem that the old drivers who know the car want to avoid as much as possible, so I want to choose a small hub. That said, when using a 16-inch hub, the crush rate is 45. If you switch to an 18-inch tire, the flattening rate will be between 40 and 35, and the tire will be thinner. As a result, comfort is reduced and the road can be a bit bumpy. For example, after passing the speed limit belt, the vibration in the car will become significantly larger. In short, if the tire width is large, the irritability of the tire will also become larger. However, in order to avoid drum bags completely, it is not necessary to use small-size wheels, and tires with a large length-to-diameter ratio must be installed. This involves many factors and is therefore affected by speed, tire pressure and load. The higher the speed, the greater the impact. In the case of fast speed, when encountering a strong impact, it will shake anyway. If the tire pressure is too low, the tire deformation becomes larger when rolling, the heat rises, the rubber becomes soft, and the tire is easy to burst when impacting. When the vehicle is overloaded, it is easy to break through the durability limit of the tire, and it is easy to burst the tire when encountering a collision.
The 17-inch wheels are not very large, but some commercially available cars are not small. However, specific models must be analyzed on a case-by-case basis. In addition to tires, the advantage of small wheels is also reflected in the fact that they can reduce the weight under the spring, thus making the vehicle's maneuvering more flexible; in addition, when using small wheels, the probability of being toothed to the edge of the wheel hub is reduced. Conversely, if the wheel hub is as small as a typical 15-inch tire, the cross-sectional height of the tire becomes larger. In this case, if the road surface is flat, it is comfortable even by car. However, after the speed bumps and depressions, the aftershocks that occurred in the past will become serious and the people in the car will be uncomfortable. Therefore, the appropriate size is 17 inches, and due to the small height of the tire cross-section, the vehicle does not shake sharply, and the discomfort caused by the aftershocks of the small wheel speed bump can also be avoided. In any case, with regard to the description of the advantages and disadvantages of large and small hubs, it can be said that the so-called 17-inch small hub and the 18-inch large hub have their own advantages. Choosing a 17-inch wheel hub is very reasonable for a private car, taking into account the five dimensions of face, comfort, power, fuel consumption, and durability, which is a very balanced choice, but this is a trade-off, can not understand the car. After all, there are also riders with strong strength and financial resources, isn't it more reasonable to choose a larger wheel hub for strong performance?