Shandong Good Achievement | "Wear resistant, slip resistant, and silent" fully upgraded, the world's highest standard 3A grade series tires have achieved mass production

Under the global trend of environmental protection and sustainable development, "low fuel consumption, low emissions, high safety, and high comfort" have become the core pursuits of the automotive industry. As a key component of automobiles, the performance of tires directly affects the vehicle's range, safety, and driving experience.

With the popularization of new energy vehicles, range anxiety has become a focus of consumer attention, and the "low rolling resistance" performance of tires is one of the key factors affecting range. Meanwhile, the "wet grip" of tires during rainy driving directly affects driving safety, and consumers' demands for this performance are increasing day by day. In addition, the demand for driving comfort is also driving the continuous upgrading of tire "low-noise" technology. The ultimate optimization of the three major performance indicators of "rolling resistance, wet sliding, and noise" has become an important issue facing domestic tire companies.

In February 2025, the SPORT MASTER e tire series developed by Shandong Linglong Tire Co., Ltd. (Yantai) achieved mass production. The performance indicators of this product have reached the highest level of 3A in the EU tire labeling system, becoming the first tire series product in China to meet the world's highest performance standards, comprehensively enhancing the market competitiveness of China's high-end tire industry.

Reducing intermolecular friction and internal energy loss is the core goal of low rolling resistance technology, "said the R&D team staff. To achieve this goal, the team has built a" formula+structure "dual drive technology system.

In terms of formula, the R&D team has developed a new generation of energy-saving formula LRR (low rolling resistance technology) by adjusting the rubber matrix, reinforcing agent, and plasticizer types. This technology can reduce the internal friction of rubber molecular chains by more than 30% during force deformation, directly reducing the energy loss caused by intermolecular friction.

Structurally, the R&D team adopts a new generation of high modulus and low shrinkage tire body materials - by improving the tensile modulus and thermal shrinkage rate of polyester cord, the deformation of the tire during driving is reduced; At the same time, combined with BPT (Steady State Pressure Technology), by optimizing the sidewall curvature, the distribution of ground contact pressure on the tire surface during rolling is made more uniform, reducing local excessive deformation, further reducing rolling resistance, and improving stability.

After four years of research and development, significant achievements have been made in this technology. Complete the basic research and development of LRR formula in 2021-2022, and screen out 3 sets of optimal formulas; In 2023, the high modulus and low shrinkage cord scheme will be determined, and its service life will be verified through a 500 hour dynamic fatigue test; In 2024, mainstream new energy vehicle models will be equipped for actual vehicle testing, ultimately achieving the goal of reducing vehicle energy consumption by 23% and increasing driving range by 8%. The tire wear index will reach 500, far exceeding the industry average of 350. After 100000 kilometers of road testing, the advantage in service life is obvious.

Driving on rainy days, the water film between the tires and the ground can easily cause a decrease in grip and pose a safety hazard. In response to this pain point, the R&D team of Linglong Tire has broken through from the dual dimensions of water flow damage and guidance, creating a three-level protection system of "film breaking drainage grip".

The new generation of high wet slip formula introduces high polarity resin components to enhance the adhesion of rubber on wet surfaces, while optimizing the vulcanization system to maintain suitable hardness of rubber in low-temperature and humid environments. In terms of structural design, two core technologies play a key role: FBU (Flow Breakdown Unit Design) can quickly cut through the water film between the tire and the ground through the "serrated grooves" design in the tread pattern; WFG (Water Flow Guidance Technology) optimizes the depth (8-10mm), width (18-22mm), and inclination angle (15 ° -20 °) of the main groove to construct efficient drainage channels and accelerate water flow discharge.

From laboratory testing to actual vehicle testing, technology is constantly improving. In the end, the R&D team combined asymmetric pattern design (larger outer pattern blocks enhance handling, denser inner grooves accelerate drainage) to form a three-level protection of "breaking film drainage grabbing", completing the "water film anti star" technology. The R&D team commissioned a third-party authoritative organization to test according to the EU ECER117 standard, and the final wetland braking distance was reduced by 0.33 meters compared to international competitors, verifying the international competitiveness of the technology.

The level of tire noise while driving directly affects driving comfort. In response, Linglong Tire has developed the Low Noise Static Pattern (LNC) technology, which works in synergy with three core technologies to reduce noise from the source.

Multi dimensional noise reduction technology disperses sound wave energy through the uneven design of pattern blocks (to avoid resonance noise) and the staggered arrangement of micro grooves (1-2mm deep). At the same time, elastic sealing structures are used at the pattern gaps to reduce the "pumping noise" generated by air entering and leaving the grooves. The inner wall of the grooves is designed as an arc shape (instead of a traditional right angle) to reduce turbulent noise during air flow. The R&D team conducted multi scenario testing of the entire vehicle, testing on different road conditions such as asphalt and cement roads at different speeds, and ultimately achieved a noise reduction of 3.2 decibels. The noise level inside the vehicle was 2-3 decibels lower than domestic competitors, reaching the international first-line level.

The ultimate goal of technological breakthroughs is to achieve industrialization and serve industrial development and market demand. At present, Linglong SPORT MASTER e series has realized large-scale production, with an annual production capacity of more than 60000 pieces and an output value of 55 million yuan. The products have passed the EU certification and will soon be the first to enter the European market to ensure that the products can accurately meet the needs of local users. In the future, the series will gradually expand the domestic high-end market, so that more consumers can enjoy the high-quality performance of domestic 3A grade tires.

Not only that, Linglong Tire has also formulated a clear future development plan. In the next three years, relying on the existing research and development foundation, the research and development team will further optimize the process, focusing on improving the stability of the formula and the accuracy of the tire structure, with an annual production capacity of 100000 bars and an annual output value of 0.1 billion yuan. At the same time, the low rolling resistance and high wet slip formula technology innovatively developed by the research and development team will not only promote the jump in tire performance, but also form an industrial chain synergy effect-reverse enabling upstream and downstream industries, helping rubber material suppliers to upgrade material formula, helping equipment manufacturers to optimize production processes, and is expected to drive the annual output value of upstream and downstream industries to not less than 50 million yuan, providing the core driving force for the technological upgrading of domestic high-end tire industry.