I'm no expert at this, but I checked the Mavic website when I purchased my wheels. My touring bike came with Mavic A319's. I wanted to run a lighter wheel/rim in the summer. The website has recommended tire widths for each rim. The recommended tire widths for the Mavic Open Pro (the rim that I use in the summer) are 19mm to 28mm. The recommended widths for the A319's is 28mm to 47mm. My touring bike will accept up to a 50mm tire.
I'm not sure what the purpose of these recommended widths are. Are they a safety concern? Or just a "performance" recomendation? Either way, I ride a 28mm Continental 4 seasons on whichever wheel/rim that I'm using.