Quote Originally Posted by speedminded
got bored.. 26" tire 8" wide 4" thick is about 2,000 cubic inches...61 of those in a liter so that makes each tire hold about 33.5 liters. A liter of air weighs in at 1.25 grams while a liter of helium is 0.1785 grams. Sooo..about 40 grams of air vs. 5.959 grams with a differance of 34 grams, multiply that by 4 for each tire and you have a total weight savings of 136 grams or 0.29 lbs, lol.
wouldn't tire pressure come into that equation somewhere???