Не пользовался, но в тесте нашел такую фразу:
"I didn't test the previous version of the Marathon Supreme, but the new version should have a lower rolling resistance based on tests of other tires that use the OneStar compound. Unfortunately, I can't tell you how it compares on the road, where grip and wear are just as important."
вот тут
http://www.bicyclerollingresistance....n-supreme-2016
P.S. У самого Marathon Racer