An interesting attempt to identify and quantify light vehicle tire rolling resistance is underway in California. The Federal government is also working on its own method. In principle this is a good concept but, depending on the rules, I'm sure it could result in a slew of unintended consequences such as gaming of the rules at the expense of safety or durability.
Remember, if you can save a bit on mpg but tire degradation (life) occurs more quickly than perhaps it is not environmentally more sound. These aspects need to be accounted for.
, Modern Tire Dealer
Labels: rma, rolling resistance, tires