There's quite a few that use 4x100, but not so many have a centre bore that large. - You're probably OK with after-market alloys and spigot rings that you can take out, but it's not a certainty.
The ones that got stolen needed rings to take them down to 59.1mm, but the Fox alloys on it at the moment have nothing because their maximum bore is 60mm. - That's the problem; the wheels might fit something else with a smaller bore, but the GTiR needs about as large as you can get.
Clearly I've got nothing against buying cheap rims off eBay for not much money rather than putting my hand in my pocket for something decent.