引言 Introduction
按有无内胎进行分类是轮胎行业的重要分类方式之一，子午线轮胎可分为有内胎轮胎和无内胎轮胎两种形式。两者的外胎结构除胎圈区域和内衬层存在差异外，其余部分基本相同，但性能特点和适用场景有显著区别。目前无内胎轮胎已成为全球乘用车和商用车市场的主流产品，而有内胎轮胎仍在部分特定领域保留应用。对于轮胎外贸从业者而言，准确掌握两类轮胎的结构差异和性能特点，是为客户提供专业产品推荐的基础。
Classification by the presence of an inner tube is one of the important classification methods in the tyre industry. Radial tyres can be divided into two forms: tube type tyres and tubeless tyres. The outer tyre structures of the two are basically the same except for differences in the bead area and inner liner, but their performance characteristics and application scenarios are significantly different. At present, tubeless tyres have become the mainstream product in the global passenger car and commercial vehicle markets, while tube type tyres still retain applications in some specific fields. For tyre foreign trade practitioners, accurately mastering the structural differences and performance characteristics of the two types of tyres is the foundation for providing professional product recommendations to customers.
一、有内胎轮胎 Tube Type Tyres (TT)
有内胎轮胎（Tube Type，简写为 TT）是传统的轮胎结构形式，除外胎外，还必须配套使用内胎（inner tube）和垫带（flap）。内胎是一个充有压缩空气的环形橡胶囊，用于保持轮胎内部的气压稳定；垫带放置在内胎与轮辋之间，用于保护内胎免受轮辋和胎圈的磨损。
Tube Type (abbreviated as TT) tyres are a traditional tyre structure form. In addition to the outer tyre, they must be used with an inner tube and a flap. The inner tube is an annular rubber bladder filled with compressed air, used to maintain stable air pressure inside the tyre; the flap is placed between the inner tube and the rim to protect the inner tube from abrasion by the rim and bead.
有内胎轮胎的制造工艺相对简单，成本较低，对轮辋的精度要求也不高。目前，它们在部分低速重载工程机械、农业机械以及一些发展中国家的老旧商用车领域仍有应用。但随着无内胎轮胎技术的普及，有内胎轮胎的市场份额正在持续萎缩。
Tube type tyres have a relatively simple manufacturing process, low cost, and low requirements for rim precision. At present, they still have applications in some low-speed heavy-duty construction machinery, agricultural machinery, and old commercial vehicles in some developing countries. However, with the popularization of tubeless tyre technology, the market share of tube type tyres is continuing to shrink.
二、无内胎轮胎 Tubeless Tyres (TL)
无内胎轮胎（Tubeless，简写为 TL），俗称"真空胎"，不需要配套安装内胎和垫带，可直接与轮辋装配使用。其核心结构特点是采用了特殊的气密层设计和加强型胎圈结构：气密层由高气密性的卤化丁基橡胶制成，替代了传统内胎的功能；胎圈经过特殊设计，能够与轮辋紧密贴合，形成可靠的气封。
Tubeless (abbreviated as TL) tyres, commonly known as "vacuum tyres", do not require the installation of inner tubes and flaps, and can be directly assembled and used with rims. Their core structural features are the adoption of a special airtight layer design and a reinforced bead structure: the airtight layer is made of highly airtight halobutyl rubber, replacing the function of the traditional inner tube; the bead is specially designed to closely fit the rim, forming a reliable air seal.
无内胎轮胎在轮胎技术领域带来了革命性的进步，凭借其多重性能优势，已成为现代车辆的标准配置。
Tubeless tyres have brought revolutionary progress in the field of tyre technology, and have become the standard configuration of modern vehicles due to their multiple performance advantages.
三、无内胎轮胎的优越性 Advantages of Tubeless Tyres
1. 安装简便，库存管理成本降低 Simple Installation and Reduced Inventory Management Costs
无内胎轮胎的安装过程相对简单，不需要内胎和垫带等附件，也省去了内胎安装、充气和调整的复杂步骤。这不仅降低了安装人工成本，还大幅减少了库存部件的数量和种类，降低了库存维护的复杂性和资金占用。
The installation process of tubeless tyres is relatively simple, requiring no accessories such as inner tubes and flaps, and eliminating the complex steps of inner tube installation, inflation and adjustment. This not only reduces installation labor costs, but also significantly reduces the number and types of inventory parts, lowering the complexity of inventory maintenance and capital occupation.
2. 轮胎/轮辋组件平衡性能提升 Improved Balance of Tyre/Rim Assembly
由于消除了内胎和垫带带来的重量不均匀性，无内胎轮胎更容易实现与轮辋的精确匹配，从而提高了轮胎与轮辋组件的动平衡性能，减少了车辆行驶时的抖动和振动，提升了乘坐舒适性。
By eliminating the weight unevenness caused by inner tubes and flaps, tubeless tyres are easier to achieve precise matching with rims, thereby improving the dynamic balance performance of the tyre/rim assembly, reducing vehicle jitter and vibration during driving, and enhancing ride comfort.
3. 行驶稳定性更好 Better Driving Stability
无内胎轮胎通常采用更低的扁平率设计，胎侧刚性更高，能够提供更好的侧向支撑力。这显著提升了车辆的高速行驶稳定性和转向响应速度，尤其在高速行驶和紧急制动时表现更为突出。
Tubeless tyres usually adopt a lower aspect ratio design with higher sidewall rigidity, which can provide better lateral support. This significantly improves the high-speed driving stability and steering response speed of the vehicle, especially during high-speed driving and emergency braking.
4. 漏气速度缓慢，行驶安全性高 Slow Air Leakage and High Driving Safety
无内胎轮胎的气密层具有良好的自封效应。当胎面被尖锐物体刺穿时，气密层橡胶会紧紧包裹住刺穿物，使漏气速度非常缓慢。这为驾驶员提供了充足的反应时间，能够安全地将车辆开到维修站，避免了传统有内胎轮胎突然爆胎带来的危险。
The airtight layer of tubeless tyres has a good self-sealing effect. When the tread is pierced by a sharp object, the airtight layer rubber will tightly wrap around the piercing object, resulting in a very slow air leakage rate. This provides the driver with sufficient reaction time to safely drive the vehicle to a repair station, avoiding the danger caused by sudden blowouts of traditional tube type tyres.
5. 制动系统散热性能提升 Improved Heat Dissipation of the Braking System
无内胎轮胎的内部结构更加通畅，有利于空气流通，能够更好地带走制动鼓和制动片产生的热量，降低制动系统的工作温度。这有效避免了制动系统因过热而导致的制动效能下降，提高了制动性能和行驶安全性。
The internal structure of tubeless tyres is more unobstructed, which is conducive to air circulation and can better take away the heat generated by the brake drum and brake pads, reducing the operating temperature of the braking system. This effectively avoids the decline of braking efficiency caused by overheating of the braking system, and improves braking performance and driving safety.
6. 综合安全性能更高 Higher Comprehensive Safety Performance
无内胎轮胎消除了内胎与外胎之间的摩擦生热问题，也避免了因内胎老化、破损或气门嘴脱落导致的突然失压风险。同时，它消除了多个车轮部件不匹配带来的安全隐患，显著提升了整车的安全性能。
Tubeless tyres eliminate the problem of frictional heat generation between the inner tube and the outer tyre, and also avoid the risk of sudden pressure loss caused by inner tube aging, damage or valve stem detachment. At the same time, it eliminates potential safety hazards caused by mismatching of multiple wheel components, significantly improving the overall safety performance of the vehicle.
7. 人工和维护成本降低 Reduced Labor and Maintenance Costs
无内胎轮胎的结构更加简单可靠，故障率更低，需要的维护工作也更少。它们不需要定期检查内胎气压和更换老化的内胎，修补也更加方便快捷，从而大幅减少了维修和更换的人工成本和材料成本。
Tubeless tyres have a simpler and more reliable structure, lower failure rate, and require less maintenance. They do not need to regularly check the inner tube pressure and replace aging inner tubes, and repairs are more convenient and fast, thus significantly reducing the labor and material costs of maintenance and replacement.
8. 车辆故障待修时间减少 Reduced Vehicle Downtime
无内胎轮胎的高可靠性和耐用性意味着车辆更少因轮胎问题而停工。对于商用车客户而言，这直接提高了车辆的运营效率，增加了运营时间和收入。
The high reliability and durability of tubeless tyres mean that vehicles are less likely to be out of service due to tyre problems. For commercial vehicle customers, this directly improves the operational efficiency of vehicles and increases operating time and revenue.
9. 轻量化设计，燃油经济性更好 Lightweight Design and Better Fuel Economy
无内胎轮胎由于省去了内胎和垫带，整体重量比同规格的有内胎轮胎轻约 10%–15%。车辆簧下质量的降低不仅提升了悬挂系统的响应速度，还有助于降低燃油消耗，提高燃油经济性。
By eliminating the inner tube and flap, tubeless tyres are about 10%–15% lighter than tube type tyres of the same specification. The reduction in vehicle unsprung mass not only improves the response speed of the suspension system, but also helps reduce fuel consumption and improve fuel economy.
10. 接地压力分布均匀，磨损寿命更长 Uniform Contact Pressure Distribution and Longer Wear Life
无内胎轮胎的结构设计使其能够提供更大的接地面积，并且接地压力分布更加均匀。这减少了胎面局部的过度磨损，显著延长了轮胎的使用寿命。试验数据表明，同规格的无内胎轮胎比有内胎轮胎的磨损寿命长约 20%–30%。
The structural design of tubeless tyres enables them to provide a larger contact area and more uniform contact pressure distribution. This reduces excessive local wear of the tread and significantly extends the service life of the tyre. Test data shows that the wear life of tubeless tyres of the same specification is about 20%–30% longer than that of tube type tyres.
