Maggie May
I had to switch out my ultra-modern, super-light KHE kevlar bead foldable tires for Demolition Zeppelin tires to end up with round wheels. But it worked.
Switching to Flip Flop Graphite Tuffs increased the weight of my bike by four whole pounds, according to the digital scale at Purolator. I switched from Profile hubbed, ti axled, ti driver, ti spoked, 25-9 geared, Primo Balance wheels. I had to move from a 25 t sprocket to a 36t. Extra chain links, much heaver tires, different brake shoes. All that added up to 4 lbs even. Before the swap, bike weighed 20.95 lbs. After, 24.95 lbs.
Looks cool though.