There are three key metrics that are used regarding aircraft tires. This short article describes the ply, speed and load ratings.
Ply Rating
The ply rating of an aircraft tire is used to identify the maximum static rated load capacity and corresponding inflation pressure applicable to specific operational requirements.
The ply rating is an index of airplane tire strength and does not necessarily correspond to the actual number of casing plies within that tire.
Load Rating
The load rating denotes the maximum static rated load capability of the tire in lbs.
Speed Rating
The speed rating denotes the maximum rated ground speed in miles per hour to which the tire has been tested and approved.
