What is the key reason for inspecting tire sidewalls?

Inspecting tire sidewalls is crucial primarily to identify potential blowouts. The sidewalls of a tire are particularly vulnerable to damage from road hazards, impacts, and other environmental factors. Issues such as cuts, bulges, or cracks in the sidewalls can create weak points that may lead to tire failure while the vehicle is in motion. A blowout can occur suddenly and can result in loss of control of the vehicle, making regular sidewall inspections an important safety measure.

While checking for tread wear, evaluating air pressure, and ensuring proper alignment are all important aspects of tire maintenance and vehicle safety, these factors are addressed through different means rather than specifically through sidewall inspections. Tread wear relates to the tire’s grip and traction, air pressure is assessed with a gauge, and alignment is monitored through suspension checks. Therefore, identifying issues in the sidewalls helps in preventing blowouts, which is a primary safety concern for commercial vehicles.