The brakes of the airplane got very hot on landing. A gasoline powered fan was used to cool them. The tires went through temperature extremes during a flight. They were impregnated with aluminum dust to reflect heat and inflated with nitrogen to 425 pounds per square inch (29.9 kilograms per square centimeter) to help prevent tire explosion. The tires were 22 ply and would last for about 15 landings.
Evergreen Aviation & Space Museum