What must the condition of rubber tires on cranes be checked for before operations?

The condition of rubber tires on cranes must be checked for air pressure before operations to ensure safe and efficient functioning. Proper air pressure in the tires is critical because it directly affects the crane's stability, load distribution, and overall performance. Under-inflated tires can lead to increased wear and tear, reduced traction, and a higher likelihood of blowouts, which could pose significant safety hazards for both the equipment and personnel working nearby.

While tread depth is also important for ensuring adequate grip and handling, it is not as immediately impactful on the crane's operation as proper air pressure. Tire brand and color do not directly affect the operational safety or efficiency of the crane, making them irrelevant checks before operation. Maintenance protocols require a specific focus on functional aspects like air pressure to optimize safety and performance in lifting operations.