Lightweighting is by no means simply “subtracting weight.” HITREKKER’s engineers have found that for every 1 kg reduction in unsprung mass, the vehicle’s acceleration performance can be improved by 0.8% and the braking distance can be shortened by 1.2 meters — provided that lightweighting does not sacrifice structural integrity.

To this end, HITREKKER has developed the AI – Driven Lightweighting system: Based on millions of sets of track data and FEA finite element analysis, the AI algorithm intelligently generates hollow weight – reduction holes in the non – load – bearing areas of the wheel while automatically compensating for the material density at key nodes. Taking the 19 – inch competition – style wheel as an example, this system has successfully controlled the weight at 7.2 kg while ensuring stiffness and strength, 18% lighter than products of the same class. More astonishingly, the uniformity of its internal stress distribution reaches 92%, far exceeding the industry average.

The bead seat angle, commonly known as the β – angle, plays a decisive role in fixing the tire on the rim and must strictly comply with the JIS D4218 standard.

The bead seat is the part of the rim that contacts the tire bead, and the design of its angle directly affects the friction and adhesion between the tire and the rim. According to the JIS D4218 standard, a specific bead seat angle ensures that the tire can be firmly fixed on the rim under various working conditions.

When the vehicle is in motion, the tire is subjected to various forces from the road surface, including driving force, braking force, and lateral force. An appropriate bead seat angle enables the tire bead and the bead seat to maintain good contact and friction when the tire is under these forces, preventing the tire from sliding or displacing on the rim. If the bead seat angle does not meet the standard, it may lead to loose tire fixation. When the vehicle is driving at high speed or performing aggressive maneuvers, the tire may risk detaching from the rim, seriously endangering driving safety.

For example, in some high – performance cars or racing cars, the accuracy requirement for the bead seat angle is even higher. Because these vehicles generate greater lateral and centrifugal forces during driving, only a bead seat angle that precisely meets the standard can ensure that the tire remains stably fixed on the rim under extreme conditions, providing reliable grip and handling performance for the vehicle.

With the booming development of the NEV market, rims, as key accessory components, have also ushered in new development opportunities. Chinese brands such as CITIC Dicastal, with their excellent technical strength and forward – looking strategic vision, have demonstrated strong global layout capabilities in the field of NEV accessories.

CITIC Dicastal closely follows the development trends of the NEV industry and has developed a series of high – performance, lightweight rims that are suitable for NEVs to meet their special requirements. Due to the relatively large weight of the battery in NEVs, there are more stringent requirements for the load – bearing capacity and lightweight of the rims. CITIC Dicastal has successfully developed rims that meet these requirements through continuous innovation in materials and processes, providing strong support for the performance improvement of NEVs.

In terms of global layout, CITIC Dicastal actively expands overseas markets and has established long – term and stable cooperative relationships with many well – known international NEV brands. Its products are not only supplied to domestic NEV manufacturers but also exported to many countries and regions in Europe, America, and Asia. By establishing production bases and R & D centers globally, CITIC Dicastal can be closer to customers, respond quickly to market demands, and at the same time, make full use of local resources and talent advantages to enhance the competitiveness of its products.

This global layout not only helps Chinese brands increase their popularity and influence in the international market but also injects strong impetus into the development of the global NEV industry. The success of Chinese brands such as CITIC Dicastal in the field of NEV – supporting rims marks the gradual transformation of the Chinese automotive parts industry from a follower to a leader, playing an increasingly important role in the global automotive industry revolution.

Tire pressure surface load and dynamic impact are two key factors that the wheel faces in actual use, and they are directly related to the safety of vehicle driving. The concept of safety redundancy design lies in that the wheel needs to reserve a certain strength reserve during the design process to cope with possible extreme situations.

Under normal driving conditions, the tire pressure provides a uniform supporting force for the wheel, ensuring that the tire is closely attached to the wheel. However, when the vehicle encounters a dynamic impact, such as driving over a pothole at high speed or hitting an obstacle, the load on the wheel will increase instantaneously. At this time, if there are structural defects in the wheel, such as insecure welding parts or small cracks inside the material, it may lead to an increased risk of bead – unseating.

Bead – unseating is an extremely dangerous situation. Once it occurs, the tire will instantly lose its connection with the wheel, and the vehicle will lose control, seriously endangering the lives of the driver and passengers. Therefore, during the wheel design process, a detailed stress analysis of the tire pressure surface load and dynamic impact must be carried out. Through accurate calculation and simulation, the stress distribution of the wheel under various working conditions is determined, potential weak points are identified, and corresponding strengthening measures are taken, such as increasing the material thickness of key parts and optimizing the welding process, to ensure that the wheel has sufficient safety redundancy and minimize the risk of bead – unseating.

As the name implies, the split – rim has a unique structural feature. It consists of two parts, the inner and the outer, which can be of equal width or designed to be of unequal width according to actual needs. The inner and outer rims are tightly connected into one body by bolts.
In some split – rim designs, there is a removable retaining ring. In other designs, the inner rim is welded to the spoke plate, and the rim flange, which is made integral with the inner rim, replaces the retaining ring to play its role. This design gives the split – rim obvious advantages when it comes to the disassembly and assembly of wide tires for heavy – duty off – road vehicles.
For heavy – duty off – road vehicles, they often travel in extremely harsh road conditions, such as rugged mountain roads and muddy swamps. This requires the tires to have sufficient width and grip to ensure the vehicle’s passability and stability. The split – rim can easily meet this need. When installing wide tires, first assemble the inner rim with the tire, and then connect the outer rim to the inner rim through bolts. When disassembling, just reverse the operation, unscrew the bolts, and separate the inner and outer rims, and the tire can be easily replaced or repaired. For example, heavy – duty off – road vehicles such as the Dongfeng EQ2080 and Yan’an SXZ15O rely on split – rims to adapt to the use of their wide tires, providing reliable support in complex off – road environments.
Caption: The split – rim is simply the “super shield” of heavy – duty off – road vehicles. When heavy – duty off – road vehicles roar in the wild and challenge various difficult obstacles, their wide tires need an extremely sturdy support. The inner and outer structure of the split – rim, like a solid armor, is closely connected by bolts, providing strong support for the wide tires. The process of installing and disassembling the tires is like changing different “battle boots” for the off – road vehicle, convenient and quick. In those remote places, the split – rim helps heavy – duty off – road vehicles move forward bravely, conquering every difficult road condition and becoming a reliable guarantee in the hearts of off – road enthusiasts.