Source of tracks for a tracked rover

So… I have really been looking to build a tracked ATV rover, but always come up stumped when trying to find sutable tracks. ideally they are rubber with a 1" to 2" tread depth and about 8" wide, sutable to be used for a rover that is about 3’ wide 4’ long.

Any ideas on this??

Thanks

I used a set of tracks from a track drive snowblower. They are a bit short but I just built my roverbto accomodate. They are about 6 inches wide and maybe 7 inches high. They have been working well so far.