215/40/15 sell well in Thailand, Hong Kong, Indonesia, malaysia pretty much anywhere they race toyota yaris and civics. Plenty of those jap bozo car hackers you mention as well.

They are a good compromise for track and street.

My friend runs them on a slightly lipped datsun 1000 and its on rails yet has just enough rubber but its no plush ride with kevlar seats and womens pads like cushioning







https://proxy.duckduckgo.com/iu/?u=htt ... iation%2FIMG_9623.jpg&f=1

Pretty awesome rubber though for racing Hayashi has come up with quite tough.
Now if they were in colors those Jp bozo stylers would line up for them :)