There are 2 cash savings, tires and fuel. In 2009, the tire CPM is running $0.038 per mile for new tires. The T-RAC CPM has been reduced to $0.024. This varies depending on load weight, travel speed, climate and driver methods. On fuel, SmartWay Transport Partnership indicates that properly inflated tires will see a minimum of 1%. Click on the link for more information about this program.