Final answer:
Inspecting tires for secondary or run-flat damage and then preparing them with a reamer and cleaner is crucial for proper tire repair and safety.
Step-by-step explanation:
When working on tire repair, it is essential to inspect the tire thoroughly for any secondary damage or evidence of run-flat damage. This inspection is crucial as running on a flat tire can cause extensive damage to the tire that may not be immediately visible. Once any damage is identified, it must be addressed properly to ensure the safety and longevity of the tire. Drilling or rasping the damaged area with a tire reamer is a common method to prepare the tire for a patch or plug, ensuring a better bond and seal. After reaming, apply liquid pre-buff tire cleaner to the area. This step cleans the surface and prepares it for the application of the patch, contributing to a strong adhesion and seal.