The last key value of rim modification is rim offset, which is also the most confusing rim parameter. Rim offset, commonly known as ET value, is the distance from the center line of the rim to the mounting surface. There are positive and negative ET values. Negative indicates that the mounting surface is inside the centerline, while positive indicates that the mounting surface is outside the centerline.

The ET value in combination with the J value of the rim width can slightly modify the track width of the vehicle, thus enhancing the stability of the vehicle when driving. This method is common in the field of racing. ET value will directly affect the visual effect of rim modification. If the mounting surface and rim are too close to the contact surface of the vehicle, it may affect the suspension system and steering system of the vehicle; On the contrary, if it is too small, it may be impossible to accommodate the braking system. Therefore, when selecting rims, we must learn from the original manufacturer's rim values. For the ET value, it can be simply understood that the larger the ET, the deeper the distance between the rim and the wheel arch, and vice versa.

Rim modification cannot be done at will!

Again, rim modification is closely related to vehicle driving safety, so it is strictly prohibited to "judge people by their appearance". Although the rim represents the aesthetic orientation of the car owner, it must be based on scientific data support and should not be done arbitrarily. When a novice attempts to refit the rim for the first time, the most common mistake is that the size is not accurate, and he always tries to make it bigger to highlight the visual effect. Oversized rims are indeed effective, but thinner tires will increase the wear in future use. Generally speaking, it is reasonable to add 1 to 2 inches to the original rims.

At the same time, a larger rim means an increase in mass. The concept of "mass under the wheel" should also be taken into account when the rim is refitted. It can be simply understood that for every 1 kg increase in the mass under the suspension spring, the impact on the vehicle when the vehicle is driving will be increased by about 3 times. Therefore, the overweight rim will not only affect the acceleration feeling but also may affect the frame.

So how can we achieve the "right balance" between visual effects and vehicle performance?

There is no shortcut in car refitting. The price is the most intuitive parameter to judge a rim product. For the common mass production vehicles on the market, the original rims usually use the casting process, while high-end models and rim products now use the forging process. The advantage of the forging process is that the overall density of the rim is average, the strength is high, and the quality is low. The disadvantage is that the high production of original leads to high prices. Compared with cast rims, forged rims have higher strength at the same quality; When the strength is the same, the forged rim is lighter.

The purpose of refitting is to better enjoy the car culture and life, especially the rim refitting. At present, China's automobile refitting products are mixed, resulting in the uneven quality of rim products, imitation and imitation. To ensure the safety of yourself and other right-of-way users, the rim modification must be done according to your ability.

Searching for a china rim manufacturer, welcome to contact us at any time.