I'm a bit late to the tubeless CX tire game. I just picked up a pair of Shimano Ultegra Tubeless wheels with one worn out Bulldog 34c silver tread carbon bead tubeless tire, and the other Bulldog with a 2mm cut (Stan’s sealant wouldn't seal cut). I patched the cut (shoe goo and an small piece of Conti GP side wall), and remounted. It required 86 psi to pop the bead in place (running Stan’s sealant). Love the ride, I can drop to 26-28 psi without hitting the rim (180Lbs in kit), below 26 and I'm hitting the rim on roots. No burps, sidewall is stiff at low psi so they don't feel squirmy and the front tire doesn't roll in fast corners. My 32c Vittoria's Cross XG Pro TNT on the same wheel are just too narrow, small side knobs don't dig in well on off-camber corners, and the sidewalls are too flexy at anything lower than 32 psi.
Question. How can you confirm a non-carbon bead Bulldog 34c from a carbon bead version? The tire package shows a logo for carbon bead, but where on the tires does it indicate the differences? I found a pair of 34 silver Bulldogs with less than two races on them, but seller has no clue if they are carbon beaded versions.
JBH, great question. I wondered that for a while.
The carbon bead version has horizontal lines underneath the tread, going width-wise across the tire. Small, but visible and you can feel them. The older tires do not. That's my own observation.
Just so you know, the Toro, the Bulldog replacement, is back in the Hutchinson catalog, in a tubeless option, and in the 34c width! The Mamba will be tubeless too, but in 32c (guessing the mold is better suited for 32c tire, since it's a newer mold). I can't tell you how exciting it is to see another high volume tubeless option out there, after so many companies moved towards UCI regulations for tubeless tires, when almost every UCI racer (except the NoTubes team) rides tubulars in UCI races. It's a shape the Captain 2bliss went away.
I'm supposed to get a test set of Tubeless Toro tires shortly.