What is the maximum tire ground speed?

• A. 195 Knots
• B. 180 Knots
• C. 210 Knots
• D. 200 Knots

Answer: (A)

Tire ground speed is the highest speed at which the tire can safely rotate on the surface without hitting the tire’s design limits. This limit comes from the tire’s construction and sidewall strength, and it’s set to prevent excessive centrifugal forces and heat that can lead to tread separation or a blowout during landing roll or taxi.

In this item, you’re asked to identify the value that matches the tire’s rated maximum on-ground speed. The correct choice is the one that reflects that rating, because going any faster would push the tire beyond what it’s designed to handle, while anything below is simply below the safe limit. The other numbers either fall short of the tire’s limit or exceed it, so they aren’t the maximum permissible ground speed.