Forklifts encounter various resistances during operation, including rolling resistance, inertia resistance when accelerating, and slope resistance when driving on slopes, all of which are related to the tires. In order to minimize these resistances, it is necessary to reduce them as much as possible under the condition of a certain output power of the forklift engine.

Rolling Resistance:
Rolling resistance is closely related to the tire. Elastic rubber tires undergo repeated deformation when rolling on the ground, resulting in heat generation due to molecular friction and friction between components, which is one of the main reasons for generating rolling resistance.

Experiments have shown that tire heat generation is related to tire structure, pattern, and road conditions. Solid tires generate more heat than pneumatic tires, resulting in greater rolling resistance.

When a 3-ton forklift is driven on a flat concrete road surface, the rolling resistance coefficient of a pneumatic tire is 0.012~0.013, while that of a solid tire is 10%~15% higher.

Inertia Resistance:
When a forklift accelerates, it not only needs to overcome rolling resistance but also its own inertia resistance. The magnitude of inertia resistance depends on the mass and acceleration of the forklift.

The weight of solid tires is greater than that of pneumatic tires of the same specification (for a 3-ton forklift, the total weight of the tires differs by 85 kg). Therefore, when equipped with solid tires, the inertia resistance is greater, and the acceleration performance is not as good as that of pneumatic tires.

Slope Resistance:
When driving uphill, forklifts need to overcome slope resistance, which depends solely on the weight of the forklift. Since the weight of solid tires is greater than that of pneumatic tires, the slope resistance of a forklift equipped with solid tires is slightly increased. In addition, the rolling resistance of a forklift equipped with solid tires is also slightly greater, resulting in slightly poorer climbing ability.