14 C.F.R. § 27.731 Wheels.
Title 14 - Aeronautics and Space
(a) Each landing gear wheel must be approved. (b) The maximum static load rating of each wheel may not be less than the corresponding static ground reaction with— (1) Maximum weight; and (2) Critical center of gravity. (c) The maximum limit load rating of each wheel must equal or exceed the maximum radial limit load determined under the applicable ground load requirements of this part.
Title 14: Aeronautics and Space
PART 27—AIRWORTHINESS STANDARDS: NORMAL CATEGORY ROTORCRAFT
Subpart D—Design and Construction
Landing Gear
§ 27.731 Wheels.