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Join Date: Aug 2008
Location: Ann Arbor, MI
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OP: Maybe just use the One Tubeless (hereafter, O1). I, too, have had a bit of hassle with the Pro One (P1) and puncture, the likes of which I never experienced through 3 sets of O1s.
Given that experience, I think your guess regarding the extra weight of the Race A tubeless may be correct; a thicker tread should not only resist cuts and punctures better, but should self-heal better in the case of puncture, aiding sealant action. If the Race A has a butyl lining, that may help those things as well, but I don't know.
Anyway, the O1 is a great tire, and may be the ticket for you given you're willing to accept extra weight in exchange for damage resistance.