Moving from stock 45 to a 52.5 would mean the wheel centerline moves in 7.5mm, from what I understand. But yeah, I guess if the rim is narrower it would mean the rim edge wouldn't move in as much
Went the other way with the Crosstrek, from 55 (stock OEM) to 48 (previous gen OEM) with the winters. Rim width the same. Pushed the wheels visually out a bit, no issues I've noticed other than making mudflaps more of a good idea