How can you tell if a tire has been over-tightened during installation?

A tire that has been over-tightened during installation may exhibit bulging sidewalls or damaged beads. This condition arises because excessive torque can distort the tire's shape, particularly at the point where the tire bead meets the wheel. The bulging of the sidewalls indicates that the tire is not seated correctly on the rim and may be at risk of detachment or blowout. Additionally, damage to the beads can compromise the tire's ability to hold air and lead to further issues with tire performance and safety.

The other options do not accurately indicate over-tightening. For instance, the visual shininess of a tire does not correlate with installation technique, and the requirement for more air pressure does not inherently indicate that a tire has been over-tightened, as various factors can influence needed tire pressure. Finally, a tire producing less noise on the road does not relate to over-tightening and can be influenced by many elements, including tread design and inflation levels.