2025 Year Book

The YEAR BOOK contains all TRA Standards and related information approved by the Association for tires, rims and allied parts for ground vehicles. These Standards include tire designations; tire load ratings and dimensions; approved rim contour(s) and valve(s) for each tire size; rim contour dimensions; valve dimensions; and other data and notes necessary for tire/rim/valve interchangeability. This book is available for $85.00 (including shipping, in the USA, and handling). This Year Book is also available electronically via digital download for $85.00 (single user license).