

Schwalbe Marathon Plus won’t fit
I’m struggling to fit these new 700x25c tyres with an inner tube and wondering if it’s a sizing issue.
The tyre is covering the rim all around, rather than fitting inside. I’ve seen many complaints online about fitting this tire, but from what I can tell in the videos, the struggle is fitting the last bit of the tire at the end whereas this feels different? The tire almost feels too big for the rim.
These are Alex Rims AT01 ETRTO with a 622 diameter. Previously on these I had a set of Schwalbe Pro Ones 700x23c but I wanted to upgrade to a set better suited for a commute, so I can’t see why these wouldn’t fit. I’ve also confirmed that the marathon tyres are 25-622 28x1.00 700x25c.
Am I missing something simple here? Wondering if I should return the tyres..