What is the minimum brake cooling time, and what is the status of BTMS indicators?

• A. 15 minutes; BTMS indicators are green and not increasing
• B. 15 minutes; BTMS indicators are red and increasing
• C. 10 minutes; BTMS indicators are green and not increasing
• D. 20 minutes; BTMS indicators are green and not increasing

Answer: (A)

After heavy braking, you need to wait for the brakes to shed heat so they stay effective and avoid overheating. The BTMS indicators show brake temperature: when they are green and not increasing, the brakes are cool and stable. The minimum cooling time is fifteen minutes, and the BTMS indicators should be green and not increasing. If the indicators were red and increasing, that would mean overheating. A longer cooldown would be safe, but it’s not the minimum.