Can't really find the reason, the hole on the tube is on the rim side and I can't find anything on the rim bed
Did you definitely orientate the tube the correct way when trying to match it up to the rim? I've definitely accidentally flipped it when trying to line stuff up.
Is the rim tape sunk in to the nipple holes. I've had the same issue in TABR - zero discernable issues other than slight depression of tape into nipple hole but it fucked me on McKenzie Pass.
Totally possible since it's pretty tricky to stuff all of it into the tyre. I will have another look on the weekend, it was getting dark when I changed the tube.
Did you definitely orientate the tube the correct way when trying to match it up to the rim? I've definitely accidentally flipped it when trying to line stuff up.
Is the rim tape sunk in to the nipple holes. I've had the same issue in TABR - zero discernable issues other than slight depression of tape into nipple hole but it fucked me on McKenzie Pass.