i went and tried the Adventure in 13/48, wearing a pair of Klim socks (long medium thickness, about equivalent to standard white sport sock sold everywhere) : they are way too big, i kept the sidi insole and added my own and they were still way too big, cinching the buckles to the point of discomfort created pressure point that were uncomfortable.
So they are ordering size 47 which is a 12.5 which should be better.
Width: they were definitely wide enough, we will see how much width is lost from 48 to 47
while there I tried the alpinestars 3 in size 12 standard insole: they were a bit tight everywhere not painful but definitely calling for a larger size. Keeping in mind its a true 12 not 12.5 like euro size equivalence.
Bottom line on width it seems that the adventures are not any narrower than other boots.
Gaerne seem to be similar to Alpinestars.
Will update when I get the 47/12.5