Which statement about tire pressure checks is correct?

• A. Tire pressure must be checked every 12 hours.
• B. If correct tire pressure was determined within the last 72 hours, a recheck is not required.
• C. Tire pressure is never checked before tow.
• D. Tire pressure must be checked only after a tow.

Answer: (B)

Tire pressure checks are part of the pre-tow safety routine because correct pressures help prevent tire failure and ensure even load distribution during towing. The statement that is correct says if the tire pressure was verified as correct within the last 72 hours, a recheck is not required. This reflects a practical window where the pressure is considered up-to-date enough for towing, assuming there are no signs of leakage, damage, or drastic changes in temperature or load. Pressures can drift with ambient temperature, road heat, and changes in load, but within a 72-hour period the verified value is typically still within tolerance, so a recheck isn’t needed unless new conditions arise. The other ideas—rechecking every 12 hours, never checking before tow, or checking only after tow—don’t align with standard pre-tow safety practice, which emphasizes verifying pressures before towing and not relying on an older verification once that 72-hour window has passed.