What is the tire ground speed limit for the 900 tire configuration?

• A. 195 knots
• B. 182 knots
• C. 170 knots
• D. 205 knots

Answer: (A)

Tire ground speed limit is the fastest speed the tires are designed to roll safely on the ground (taxi, takeoff, and landing phases). It comes from the tire’s speed rating and the aircraft’s tire configuration. For the 900 tire configuration, the tires are rated to handle up to 195 knots on the ground. Exceeding that limit risks tire overheating or failure during high-speed taxi, braking, or touchdown. The other numbers don’t match this configuration’s rating—some are lower ratings that belong to different tire setups, and one would exceed the 900 configuration’s limit. So, 195 knots is the correct limit for this configuration.