What is the maximum tire ground speed?

What is the maximum tire ground speed?

• A. 180 kts
• B. 175 kts
• C. 185 kts
• D. 182 kts

Answer: (D)

The limit on tire ground speed comes from the tire’s speed rating—the maximum safe rotation speed of the tire while the aircraft is on the ground. Exceeding this rating risks tire failure due to excessive centrifugal forces or heat, especially during high-speed taxi, braking, or a rapid rollout. Here, 182 knots is the specified maximum. Values below that (like 180 or 175) are within limits but not the top allowable speed, while a higher value (like 185) would exceed the tire’s rating. So 182 knots is the correct maximum.

The limit on tire ground speed comes from the tire’s speed rating—the maximum safe rotation speed of the tire while the aircraft is on the ground. Exceeding this rating risks tire failure due to excessive centrifugal forces or heat, especially during high-speed taxi, braking, or a rapid rollout.

Here, 182 knots is the specified maximum. Values below that (like 180 or 175) are within limits but not the top allowable speed, while a higher value (like 185) would exceed the tire’s rating. So 182 knots is the correct maximum.