What is a sign that vehicle tires may need to be replaced?

Bald patches or uneven wear on the tread is indeed a clear indication that vehicle tires may need to be replaced. Tires are designed with tread patterns that provide traction and grip on the road. When the tread becomes worn down, especially in certain areas, or if there are bald patches, it signifies a loss of grip which can compromise driving safety.

The condition of the tread is critical; the presence of uneven wear can indicate issues such as misalignment, improper inflation, or suspension problems. These factors can lead to further deterioration of the tire if not addressed, along with potential risks while driving, such as losing control or experiencing longer stopping distances.

In contrast, the presence of a smooth surface on the sidewall suggests different issues such as curb damage, but it is not a direct indicator that the tire tread itself needs replacement compared to the significance of the tread wear. Consistency in tire pressure is important for stability and safety but does not indicate the condition of the tread. Lastly, moderate tread depth does not necessarily mean the tires need replacement; it is more about the actual state and effectiveness of the tread pattern.