Can absoluteBLACK's 48/32 sub-compact chainrings be mounted on the Quarq DFour (for 4-bolt Shimano chainrings)?
A way of getting a pretty good guess is find a laid-flat image of the ring in question, open in photoshop or gimp or cad or whatever, make some paths or circles that exactly cover two opposing bolt holes, then make a line between the centers. Get the measure of that line in whatever application you're using and the irl physical measurement of your spider, and then make a circle whose center is the midpoint of the line and whose diameter is scaled to the in-image length of the line as ratio between the spider diameter in mm and 110. That should give you a good idea whether it's way off, may take minor filing, etc.