I expanded the Rallye wheels to 20"... They look awful. 18" is passable, 17" looks much better. Looking under my 2020 RT50, it looks like there's plenty of room for 17" wheels. Getting someone to fabricate a set is another story. I've spoken with several manufactures; all of which were oblivious to the popularity of the original Rallye design. Somewhere in my mess of bookmarks I have a FCA note the reads 22" to 17" fitment.