What might be?
Pro 4 Endurance are a different tyre.
I'm only repeating what I've seen elsewhere, but apparently the Krylion 2 endurance are the same tyre as the Pro4 endurance. And I couldn't tell difference when I had them in hand. Not that it matters anyway, as the Krylion are only in a 25.
They're thicker and slower according to your link. Similar tech maybe but Pro 4 are still available.
@Kurai started
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Kurai
hippy
What might be?
Pro 4 Endurance are a different tyre.