What does the acronym RIST stand for in tire service?

The acronym RIST stands for Remove, Inspect, Snug, Torque. This is a fundamental process in tire service that emphasizes the proper steps for handling wheel installations and maintenance.

Removing the tire or wheel is the first step, allowing technicians to examine the condition of the tire and its mounting surface for any damage or wear. The inspection phase is critical as it involves checking the tire for issues such as cracks, blisters, or irregular wear patterns that might compromise performance or safety.

Once the wheel is back in position, the snugging step refers to the initial tightening of the lug nuts to ensure that the wheel is securely in place, but not yet fully torqued. This is important to prevent any movement of the wheel during the final tightening phase. Finally, the torque step involves applying the correct amount of rotational force to the lug nuts as specified by the vehicle manufacturer. This ensures that the wheel is held securely in place, minimizing the risk of wheel separation during operation.

This process is crucial for maintaining tire safety and performance, as improper installation can lead to dangerous conditions on the road.