I run Pirelli AT 255x55x19 every day and they are pretty good. I killed one in the Flinders by hitting a grid at high speed (the tyre didn't burst but developed a bulge on the side wall). Other than that, no problem to report. I also have a set of Wrangler MTRs. I have never punctured one but they are not as good on the road (a little noisy, and quite slipprey when wet). I wouldn't run those for everyday work.
On another note, does anyone know where I could buy a 19 inch rim? I need another spare before I head for the Cape next month.

