I was surprised that my touratech panniers have a label in them, telling me not to exceed 15 kg each (33 lbs), but they only wrote that in German, so I don't really know what it says (my excuse if they get overloaded for any reason).
As far as weight for a trip, a litre of water is already 1 kg, and that is without the container you put it in. If you only take a couple litres and a bottle of fuel, you have already hit the weight limit for one of those boxes. I also forsee myself adding bags on top of my already very large panniers for some long trips in the future (mostly because of some specialized equipment). But I do agree that choosing what to bring, so you don't bring an excess of stuff is very important.
Also, as another person mentioned, get a dry bag for the rear seat (if you aren't riding 2-up) and put most of the heavy stuff there so you have less to worry about. I would think the panniers should easily be able to hold 20 lbs each. Also, if you are staying on the slab, go for it; if you are going off-road at all be a little more caustious of those limits.
2014 DL650AL4 - Too many farkles to list
2012 DL650AL2 (REBUILT)
Last edited by tkwetzel; 07-18-2012 at 03:11 PM.