Tire has torn from the bead
We are the team of about 300 lbs plus the bike 50 lbs and the trailer 100 lbs. We had a lot of miles on 47 mm Marathon Plus with no problem. Recently I changed tires to tubeless 27.5 Vittoria Mezcal 2.1, inflated to 40 psi. After 150 miles the rear tire has torn from bead.
What could be a reason for that? Is 40 psi not enough? Or these mtb tires are too fragile for tandem? Vittoria doesnt say what is the aloud weight. But Schwalbe claims for similar XC tires, that max. weight pro tire is 100 kg. For Marathon 115 kg.
P.S. The tire was probably overinflated up to 60 psi (52 is aloud) during mounting. But was never ridden in that state.