The scientific name of a large single tire is "wide section tire". Internationally, tires with a section of 385mm or more are generally referred to as large single tires, while domestically, large single tires can generally have a section width of 425mm or 445mm.

The biggest feature of a large single tire is its width. Vehicles that originally required two tires to be installed side by side only need one tire installed on one side when using a large single tire. Therefore, vehicles that use a large single tire have fewer tires than those that use regular tires.

This directly relates to a very obvious advantage of large single tires: light weight. According to relevant calculations, a 425/65R22.5 large single tire can reduce its own weight by 70kg-80kg compared to two 285/80R22.5 twin tires. If all three axles can use a large single tire, it can reduce its own weight by about 420kg-480kg. In the increasingly strict environment of overloading control, the reduction of vehicle weight often means that more goods can be loaded, which can to some extent improve the operating income of vehicles.

In addition, compared to two regular tires, a large single tire reduces the contact area with the road surface to a certain extent, and the rolling resistance and friction are relatively smaller. In addition, it is lighter in weight, which can make the vehicle run more fuel-efficient. According to relevant experimental data, if a three axle semi-trailer and a tractor are equipped with a large single tire at the same time, the fuel consumption per 100 kilometers can be reduced by about 6%. This can effectively reduce the comprehensive vehicle cost for car owners who frequently travel long distances.

Some car owners have expressed doubts: since the benefits of large single tires are so obvious, why are most freight vehicles still using regular tires now? This has to mention its disadvantages, after all, everything has cracks, and advantages can also transform into disadvantages under certain conditions.

For example, with a small contact area with the road surface, although it can save fuel, the driving force of the wheels will also decrease when the friction is reduced. In addition, if encountering rainy and snowy weather, the wheels are more likely to lock up, slip, and spin, which affects driving safety;

The load-bearing capacity is relatively poor, and the load-bearing capacity of an independently installed large single tire is not as good as that of two adjacent tires. In some heavy-duty or complex working conditions, the practicality of a large single tire is another matter. In some extreme cases, such as a flat tire, if two tires are side by side, and one of them has a flat tire, the other can still barely drive to the repair station. However, if a large single tire has a flat tire, the vehicle will immediately collapse;

At the same time, the price of large single tires is also higher than that of regular tires, and the maintenance difficulty is relatively greater. More importantly, the matching requirements for the axle are also high.

If the dual axle used by car owners is directly replaced with a large single tire, it is easy to cause significant deviation in the wheelbase, which can greatly affect the handling stability of the vehicle. If the vehicle is fully loaded or when the center of gravity of the loaded goods is high, driving on complex mountainous roads, sharp turns, and bumpy roads will seriously affect driving safety. So, in order to retrofit a large single tire, it is necessary to choose an axle that fully matches all parameters. We suggest that you choose the axle products under the Darong Group, including drum, disc, low flat, and external models with complete specifications, which can be customized according to the actual needs of customers.

Overall, it is true that a large single tire has a light weight and is fuel-efficient. However, it is only suitable for long-distance standard load or other similar operating conditions. If it is a frequent heavy load and complex road conditions, then it is necessary to carefully consider changing the tire, and not blindly follow the trend. The one that is suitable for oneself is the best.