Impossible without fender flares - both ends rub.
I've been searching in vain for some fender flares for the wagon. It looks like the only viable route would be to have them custom-built.
Note: you could solve clearance issues on the front by putting on the Sedan fenders, but I don't really like the look (someone on the Forum did this & posted pictures a while back) and custom flares cost about the same as new fenders, unless you can get lucky and find a used set of fenders in the correct color.
Note #2: there are a couple of 235's that may fit, with a 50mm+ offset wheel. However, they're really not much wider than a 225 Azenis.