I had the exact same issue. Assegai 2.5 on a 29 mm rim. I put it down to the tires though because I found the Kevlar bead was loose in the rubber. I was wiping sealant off and I could see the sidewall of the tire bunching up. I found that they mounted OK. All I can think of is maybe my rim and the plastic Bontrager rim strip didn’t allow enough room for the insert. But the tell tale line on the tire was equidistant from the rim all the way around.
Oct. 7, 2021, 12:14 p.m. - Andy Eunson
I had the exact same issue. Assegai 2.5 on a 29 mm rim. I put it down to the tires though because I found the Kevlar bead was loose in the rubber. I was wiping sealant off and I could see the sidewall of the tire bunching up. I found that they mounted OK. All I can think of is maybe my rim and the plastic Bontrager rim strip didn’t allow enough room for the insert. But the tell tale line on the tire was equidistant from the rim all the way around.