Originally Posted by chaadster

Perhaps, but the 47c Horizons which came on my Doppler were 697g each (actual)! That’s heavy AF! Rode like the proverbial Cadillac, but was slow. I replaced them with Herse Switchback Hill 48c standards, claimed at 441g, dropping over a pound in rubber and bringing the ride alive. It’s still a heavy bike, though, so I dunno if it made any meaningful difference to climbing speed, but I find the bike a blast to ride, so I don’t care!