Those are from an ATV. oddly enough the 4x140 bolt pattern has been found on ATVs, making this possible.
here is some info some may find interesting. the company that makes one version of the tracks. http://www.litefootatv.com/html/litefoot_utility-rated.htm and another http://www.mattracks.com/
I'm not on dialup....but I'm assuming by the URL it's the video I'm thinking of seriously, I'd do it in a heartbeat, if a set of mattracks didn't cost more than paying to have my car shipped to Perrin to have them build and install a 600awhp EZ30R. where'd you hear this? 4x135 is pretty common on ATVs, and we frequently talk about using ATV tires and rims. problem is most ATVs use 12" wheels, which won't clear the brakes. and a big ATV weighs about 1/4 what even an EA81 hatch (what the video is of) on an uber diet does. the Mattracks are pretty beefy, but I wouldn't trust a set designed for a 500lb ATV under a 2500lb car. more likely, they had a set for a 6-lug truck, and realized you could mount them to the subaru with very little modification also, pretty lame video in the grand scheme of things. other than the fact that the setup is pretty rare, they're not pushing the limits of the car or the tracks. check out the mattracks website (linked above) for some extremely impressive footage.
