I got these tires mainly to ride on adverse days and icysnowy conditions while commuting, but more importantly to ride confidently on black-ice glazed bike paths and get inout of my perpetually unplowed ice-rink-like neighborhood. They are 2.5 lbs with tubes, so they are definitely heavier & have higher rolling resistance on clear pavement. Tehy perform well on packed dirt, icy roads as well.
SO far, I have ridden about 200 miles on this set with no lost studs (heed the 30km breakin period!) and no significant grinding down of studs.
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