The influence of binder properties on the moisture susceptibility of asphalt-aggregate mixes was evaluated by using thirty-two mixes with a combination of eight asphalts and four aggregates. Four procedures were used to test the mixes. 1) Environmental Conditioning System, 2) Oregon State University Wheel Tracker, 3) SWK Pavement Engineering/University of Nottingham Wheel Tracker, and 4) Net Adsorption Test. Because the testing procedures differed, it was not appropriate to make direct comparisons of the results.