I went with 245/45R18 Firehawk Indy 500's.
Got rid of alot of the mushy, and were quieter to boot!
A great tire for a great price IMO.
I wouldn't go with just dropping aspect ratio as your speedo will be out significantly.
Ensure the overall diameter/revs per mile are very close (within about 2 %).
Tire Rack is great for all that info when you compare specifications on tires.
I'm not sure there'd be any difference from importing from Japan. I'd check with jdm import companies here in Canada and see if they'd be willing to help you out.
Either that or contact a customs broker here. No direct experience with them but A.D. Rutherford or Livingston International I'm sure could help you.
Take them to a scrapper/recycler. They'll buy them because they're aluminum. Won't be a fortune but they're no good for anything else (except maybe wall art LOL)
Did 3400 miles round trip Winnipeg, Manitoba Canada to Las Vegas last year in May.
Took 2 days on the way down, did the trip back non stop....getting too old for that! LOL
Absolutely awesome highway cruiser at 80mph.
New set of studded winters already in process, wheels chosen as well. I'll be ready for the cold/ice/snow...
I'm in central Canada (Winnipeg, Manitoba)
https://www.dcpowerinc.com/
or maybe
https://www.maniacelectricmotors.com/
These are bookmarks I've got from a few years ago when I had my WRX. Maybe they can help?
The nameless axle backs sound really good *however* because of the cvt the amount of drone inside the car is crazy(imo).
Mine are hanging on the wall in my garage - put the stock back on...