I am frustrated that after decades, there are no metrics for low rolling resistance tires. Guess I'll have to make my own. The trick is measuring temperatures across the tread, sidewall, road surface, and air. Use the temperature differences to determine how much energy is being wasted by the tires. It also needs to measure the temperature over a 10 mile benchmark including the speed. Operational, it needs to easily attached to any car and collected the data for the duration of the test. Then download the data and reduce the data to temperature differences. With the tread temperatures, wheel alignment can be checked too. Bob Wilson
So very long ago, we discussed LRR and 'cornering and braking' competence of tires here. The measurements (traffic-cone slalom) are 'how'. The tradeoffs of routine fuel economy against rare/never emergency maneuvers are why. That work was not done. Our lovely PriusChat is more for talking about than for doing.
I'd think data from a coast-down test or towing force would be a much easier way to obtain semi-accurate tire rolling resistance data.
