Loads of tyres out there, hardly any ATs
I would guess that it's not a typical 4x4 size as the 65 profile is fairly low profile for a 4x4 that's going to be used offroad
You could go up to a 245/70/17 which is about an inch taller and half an inch wider but you would have to check for rubbing and may have a change in acceleration and towing grunt because of the effect on gearing. This size seems to be standard for newer pickups like the Navara.
P.S. Nothing wrong with Kumho