Maybe with google spreadsheet (like excel but online). I would prefer a table which you can sort for all details, like tire width or offset.
Possible columns could be: wheel width, offset, stock struts/upgrades, distance to strut/coil, distance to fender, fender status(rolled/stock/flared), tire size(split to width, diameter and cross-section), tire manufacturer,tire type, link to a picture and the other things you mentioned. But someone would have to moderate it.
I would love to see that.