To determine whether agricultural tires need to be replaced, you can consider the following aspects:

First, the degree of wear

Observe the wear limit mark: there is a wear limit mark at the tread groove of each tire, and the thickness of this mark is about 1.6mm (also said to be 2mm). When the thickness of the tire is worn to a point where it is two marks away from the limit mark (i.e. 3.2mm), the condition of the tire should be checked frequently. If the tread depth is close to or reaches the wear limit mark, the tire has been severely worn and needs to be replaced.

Tread slippage condition: If the tread of the tire is not enough for the tire to grip the ground properly, resulting in slippage, and the slippage rate exceeds the normal range (e.g., 8% to 15%), it may mean that the tire is worn to the extent that it needs to be replaced. Skidding will not only affect the operating efficiency of machinery, but also increase fuel consumption.

Second, the damage

Appearance check: Observe whether the tire has cuts, punctures, bulging, delamination off the skin and other damage. These damages may affect the performance and safety of tires, once found should be replaced in time.

Internal inspection: If the tire pressure drops rapidly, it may mean that there is damage inside the tire, such as puncture or air leakage. The inside of the tire should be inspected and replaced if necessary.

III. Signs of aging

Cracks: Observe the tread of the tire as well as the lines on the tire wall. If cracks are prevalent, it indicates that the tire has aged badly. Aging tires due to the weakening of the tire wall strength, in the process of mechanical use due to the temperature rise is prone to the danger of bursting, so it should be replaced in a timely manner.

Service life: the service life of tractor tires is usually between three and five years, but this is only a rough estimate. If a tire is approaching or exceeding this service life, replacement should be considered even if the wear is not severe.

Fourth, the intensity of use and maintenance

Intensity of use: If agricultural machinery is often subjected to heavy-duty operations, tires will wear faster and may need to be replaced more frequently.

Maintenance: Choosing high-quality tires and regular maintenance, such as maintaining proper air pressure, regularly checking wear and repairing damage in a timely manner, can extend the service life of tires. However, if not properly maintained, tires may need to be replaced more frequently.