The tires create less friction than normal, which results in lower fuel consumption and correspondingly low CO2 emissions. Other methods developers are looking at to save fuel are weight reduction programs, more efficient drivetrains and new hybrid powerplants. However, at the end of the day swapping to the new fuel-saving tires is the most cost effective technology.
According to Michelin, the low-rolling resistance save about 0.2L of fuel per 100km and reduce CO2 emissions by up to 4g/km. The specials tires aren’t available at tire resellers as yet but Michelin expects to make them available by next year.