my rims are slightly wider than standard at the hub,i would say around the 5mm mark,i've had no problem with hub bolts coming loose etc,and i really push my car hard,just make sure you check regulary for the first 1000 miles as the wheels bed in to the hubs/drums.....im not condoning or saying your safe tho,thats your choice!!!!...
oh,and dont forget ''copperslip'' or something on the back of the alloy wheel.........thats stops the wheel corroding to the steel/iron hub.
your rims do seem to have lots of inset,defo ex FWD ones