What should be done to the trailer suspension after driving 1,000 miles?

Answer: B — Torque trailer suspension nuts

After driving 1,000 miles, it is essential to torque the trailer suspension nuts to ensure that they are securely fastened. This step is crucial because the vibrations and stresses of the road can cause fasteners to loosen over time. Proper torque levels help maintain the integrity of the suspension system, which is vital for safe handling and performance of the trailer. Regular maintenance, such as torquing the nuts, helps prevent potential mechanical failures and contributes to the overall longevity of the vehicle's components. While lubricating the suspension components may also be necessary as part of regular maintenance, it is not specifically noted as a critical action after this distance. Inspecting for damage is important, but the immediate need after a long drive is often to ensure that all parts are secured, making proper torque a priority. Replacing the suspension entirely would be excessive unless there was a previous indication of failure.