I've been using CO2 for my 23c tires and the 16g size works fine. I'm wondering how CO2 works for much larger tires? My hybrid has 700x35c tires, my mountain bike has the wide 26" tires while my touring bike has 700x37s. I know that I could experiment, but that would be wasteful. Does anyone know of a chart or formula that indicates the pressure that a 16g cartridge will inflate different size tires to? The 35s and 37s only need to get to 80 psi or a bit less.