When tire operating cost crosses several steps, fleet customer, technical team, and aftersales team should use one shared record. Link tire operating cost to project, route, vehicle group, and acceptance stage in the acceptance sheet rather than using only a model or project name. Review the project specification, trial record, and approved cost or service assumptions, then complete trial operation on the actual route and payload, record tire wear, energy use, faults, and downtime, and sign the two conclusions separately. Revise the specification or delivery phase before releasing later batches when tire-cost results miss acceptance. Before closing tire operating cost, review the corresponding import checklist. For a first batch or high-risk item, arrange at least 2 independent checks for tire operating cost, with both records citing the same route, vehicle group, and acceptance stage. If one document covers several fleet programs matters, record a separate accepted or open decision for tire operating cost.