Rolling resistance is often stated by riders as one of the most important features in choosing a tire. But it should not be the first priority.

A common perception is roll resistance in the front is of lower concern, although critical in the rear. There is more to it than that.

Sure, I like fast rolling tires, front and rear, but not at the expense of control: tracking, braking and cornering.

The main reason to use the "faster" tire on the rear is you can usually deal with the lesser grip more easily as compared to the front. Drive traction also comes into play but if that is a major concern, rolling resistance is probably not a high priority, either.

Bottom line is you need a tire that suits your conditions and riding style AND that you have confidence in. If you do not trust it, you can not get the best from it.