And here is one person's useage on a 5000k mile trip.
" Originally Posted by VincitOmnia
Just returned from running 5,000+ miles up through BC, the Yukon, NWT and AK, including running up the Dempster, TOTW Highway, down to Telegraph Creek, and other assorted off road routes on a fully loaded GSA. Rode for three days straight in the rain in BC, lots of mud, wet gravel, and the ever present construction on the Dempster. I say without reservation say that the Karoo 3's handled everything I threw at them. No issues what so ever. Ran them as low as 22/25 on the Dempster, and as high as 32/35 on the interstate. In terms of wear the front is still in great shape. The rear is probably 70% gone. I could easily ride the rear another 1,000 miles for sure off road, and probably another 2,000 if I'm just commuting. Planning to leave it on for the rest of the summer and see how much more I get out of it, but it won't be a clear test since now I'll just be commuting on an empty bike instead of riding fully loaded.
VO "
Sounds good to me so far.