Not in my experience. My tubeless conversion - Kyseriums with Stans valve and sealant (no tape) - holds air for as long, if not longer than prior tube setups. Guess it depends how lucky you get with the valve seal and tire fit.SwiftSolo said:I think buying tubeless specific wheels is the better way to go. If you put about 2 oz of stans in those, you'll be able to do 7 day tours without adding air--not so with the mavics with twice that amount of stans. They required the typical minimum of every other day or more.
On another note, is there any safety advantage with tubeless specific wheels? My very limited understanding is that they just make tires easier to mount.