Re: Which Swampers?
We have -20* days for a couple weeks at atime here, and my flatspotting (33" TSLs) has never lasted for more than 3/4 of a mile. I was sort of surprised, because everyone always talks about the "horrible" flat spotting.
With my experience, my advice is don't let the flatspotting issue be part of your decision.
You say tomato, I say fawk you.