According to NFPA 1911, tires must be replaced every how many years regardless of their condition?

According to NFPA 1911, tires must be replaced every how many years regardless of their condition?

• A. 5 years
• B. 7 years
• C. 9 years
• D. 10 years

Answer: (B)

Tires age and can become unsafe even if tread looks fine. The standard for in-service fire apparatus sets a fixed retirement age for tires to address this hidden aging, not just what you see on the surface. Seven years from the tire’s manufacture must pass before replacement is required, regardless of condition. This means during inspections you’ll check the tire’s age using the date code (DOT) on the sidewall and plan replacement around that seven-year mark to prevent failures that aren’t obvious from tread depth alone. Choosing a seven-year interval balances safety with practical maintenance planning. Replacing every five years would be more conservative and costly, while waiting until nine or ten years increases the risk of aging-related failures, even if the tire appears serviceable.

Tires age and can become unsafe even if tread looks fine. The standard for in-service fire apparatus sets a fixed retirement age for tires to address this hidden aging, not just what you see on the surface. Seven years from the tire’s manufacture must pass before replacement is required, regardless of condition. This means during inspections you’ll check the tire’s age using the date code (DOT) on the sidewall and plan replacement around that seven-year mark to prevent failures that aren’t obvious from tread depth alone.

Choosing a seven-year interval balances safety with practical maintenance planning. Replacing every five years would be more conservative and costly, while waiting until nine or ten years increases the risk of aging-related failures, even if the tire appears serviceable.