What can happen if a replacement tire has a lower speed rating than the original?

Choosing a replacement tire with a lower speed rating than the original can indeed affect the handling of the vehicle. The speed rating of a tire indicates the maximum speed at which it can safely operate while carrying a specified load. If a tire with a lower speed rating is used, it may not be designed to handle the stresses and heat generated at higher speeds, potentially leading to reduced grip, stability, and overall control, particularly during maneuvers such as cornering or emergency stops.

While a lower speed-rated tire may seem adequate for normal driving conditions, it could compromise safety and performance, especially if the vehicle is required to perform at higher speeds. Consequently, it's crucial to match or exceed the original equipment tire specifications to maintain optimal handling characteristics and safety.