Originally Posted by
rsbob
Two TPU tubes from Ali for $8 total. They ride and hold air just fine and don’t leak down much air when sitting for a day or two,
Edit: using 3 TPUs vs 3 “light” butyles saved me over a lb. Jury’s out if the bike feels more sprightly, but it certainly doesn’t feel slower.
not based on the weights you show. If butyl weighs 0.174 lb and TPU weighs 0.084 lb, the weight difference between 3 butyls and 3 TPUs is 0.27 lb