WR? Re: Nokian Group Buy

[Benedikt Rochow]

>WRs are great if you do a lot of cold weather driving on mostly clear
>roads- they have a 50k treadwear warranty and they have decent dry and
>wet grip, much better than most dedicated snow tires. The RSI or Hakka
>4 would be the preferred tire if you see a lot of snow on the ground
>and get lots of ice and snow.
>
>The WR is a cold all-season tire- I wouldn't drive on it in the
>summer, but that might just be my preference.
>
>Taka

Thanks.
Looking at the RSI and their truck tires (due to size), I come up with
the 
WR or LT at 1/2" too high diameter, or the RSI at 2" too small diameter.
(225/75 is the stock diameter I'm looking for.)

How would the RSI (or LT) wear on dry/wet roads in the cold?
In the winter, I drive mostly on wet NE interstate highways, but it's
the occasional heavy snow (and anytime surprise black ice) on the
interstate, as well as the commonly unplowed town roads, that make me
hesitant about the WR given your description above.