Michrider:
Last year I bought her an Orbea Diva.It just happens to have tubeless tires.I understand that a tube can be used if needed.

Mich, did that come set up w/o tubes? Reason I ask out of curiosity is that none of the bike suppliers are currently selling bikes pre-tubeless (that I have heard of), due to liability. Of course, your shop could have kitted the tires that way.

iceman:.. Generally, regarding tubeless tires, the Stan’s does a much better job than the Caffelatex …

Admittedly, so far I have my own small sample of one set of tubeless conversions and one set of tubulars w/sealant. But the tires are normal (not tubeless ready) 29’er Bontrager 29.3 Team Issue tires, and Caffelatex has effectively sealed the porous sidewalls, and have continued to seal many (a couple of dozen) punctures by goatheads, while on both urban assault and mtb rides. What GuitarTed at 29inches.com had to say, here. And Lennard Zinn, initially on cyclocross racing tires had to say on Caffelatex.

Corey