My experience over the years told me some things:
– sizing, specially on these “upper” dimensions is highly inconsistent between brands and even within their ranges
– even between a 2.4 and a 2.6, in practical terms the size difference is not that huge
– the very largest tyres are either paper thin or, if any meaningful protection is present, weight a metric ton
So, as of now, I simply check what’s available between 2.4-2.6 and choose based on thread, protection and up to what weight I’m willing to pedal around.
Right now I’m 2 weeks (6 rides) into a set of Michelin Wild Enduros 2.4. very close in actual size to the 2.5 Maxxis I used to run. They have that damped, muted DH tyre feel I like, even more so than doubledowns. The front one is bonkers, so good, better than a DHF at everything it seems. The rear one climbs and brakes better than a DHR II but I’m still coming to terms with it at corners, sometimes does some weird stuff