Thank you for the idea. The Nokian R2 is a very nice tire. I have the car version on my bmw.
I do still have my 19". However, the 255/55x19 size is only load rated to 111 XL which is fine for a stock lr3 but not for mine. With it being at 7000 lbs or more, it is too close to the limits, especially when loaded up and near 8000.
Aside from that the R2 will not wear nearly as long as either the Michelin or the Nokian LT2. In fact the Michelin actually claims to have a 40,000 mile wear warranty.
Adding to the equation, the stock lr3 tire size is too small for the rud chains I have. On top of that, a stock width tire may still be too wide still for clearance at the tight spot behind the upper portion of the wheel at the control arm.
I think europeans have had good luck with chains on the stock size though. I am figuring they used spacers. That plus the smaller diameter ought to work quite well really for full articulation, sharp turns, etc, without issues.
A 245/70x17 would be ideal really. That's a 30.5" diameter and narrower so clearance issues are reduced. I'll be giving this 17" wheel thread some thought.