The TMPH rating defines another factor for evaluating the performance capability of off-the-road tires. The TMPH rating is a measure of work per unit time and as such is intended to supplement information published by tire industry standards associations and by tire manufacturers.
SAE J1015-1977 history
2012SAE J1015-2012 Ton Kilometer Per Hour Test Procedure
1995SAE J1015-1995 TON KILOMETER PER HOUR TEST PROCEDURE
1991SAE J1015-1991 Ton Kilometer per Hour Test Procedure, Standard;