Join Date: Jun 2016
Location: Newcastle, Australia
265/70 has been reported as a size that wonít rub, but of course your experience may vary. Note that not all 265 tyres are approved for installation on the standard 7Ē rim.
For the use you describe, the KO2 will suit you better 95% of the time... but itís that 5% you need to worry about. The KO2 is not as good a mud tyre as the original original KO as the shoulder blocks are closed on every second pair, which inhibits self-cleaning. The KM3 is a substantially better road tyre than the KM2 was and is still pretty good in mud, so of those two given your stated use, Iíd suggest the KM3.
However, the main disadvantage of MT tyres is that they are nowhere near as good at wet road traction as HT or AT tyres. Stopping distances, cornering, wet roundabouts... even on ATs I can have the stability control singing the song of its people in winter days.
A compromise you might care to consider is a square block AT, along the lines of the Kumho MT51, **** Cepek Baja ATZ, or Wrangler Duratrac. These sit somewhere between the KO2 and KM3.
Finally, your assessment of body lift is correct. Your diff will always be the lowest point of the car and only big tyres and/or portal axles will ever fix that. Body lift is to allow those bigger tyres to fit (and give your suspension more flex). Not really suitable for a Navara IMHO but people do it. Thereís a couple of threads running elsewhere about it.