I have Schwalbe No14 tubes (125g) and Schwalbe Black Jack Lights Folding (520g) that seem pretty light to me. This is honestly the first time I have ever weighed anything to do with a bike. I am NOT a weight weenie. The Bontrager came like this. The only other time I ever put a bike on the scales was to prove my expensive (at the time) Saracen Kili Flyer Comp weighed over 32lb and I could therefore join Team Lard BiTD for people who just don't care about bike weights.