Originally Posted by
veganbikes
I am always looking to ditch some weight but tubes aren't the weight I am looking to ditch.
If you didn't need to carry any tubes as spares you could eliminate the weight of 4 tubes from what most carry (two in the tires and two spares) which would be pretty significant IMO. You would also effectively more flexible sidewalls which would mean an improved ride and probably less rolling resistance.
It does come with some costs that have already been mentioned. I have not yet decided that tubless is worth it for me. I definitely am not ready to spring for new wheels so if I did try it I'd go with a ghetto conversion. I figure I get part of the weight savings and sidewall flexibility by using thin lightweight tubes sized on the small side.