orange4boy -
It would make sense in the EU because they have the tire labeling that has to document things like noise and predicted fuel consumption.
Green Car Congress: EU Parliament Approves 2012 Tire Efficiency Ratings
Quote:
The label will follow the familiar “A to G” classification system which is used on European energy labels in a wide range of applications, from appliances to buildings and aircraft. The most efficient tires will be awarded an “A” rating, and member states will only be allowed to legislate purchasing incentives for tires with an energy efficiency rating of “C” or better.
In addition to the tire’s energy efficiency, the label will provide information about its performance in wet conditions, as well as the tire’s rolling noise in decibels. The label will include a “noise pictogram” to graphically indicate the level of external rolling noise, indicated by ascending numbers of black “waves” emitted from a speaker symbol. Automobile tires that produce noise below 68 decibels, for example, will be labeled with one black and two white “waves” next to the value in decibels.
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The European Union is studying green label for tires — Autoblog Green
CarloSW2