Steel Soldiers now has a few new forums, read more about it at: New Munitions Forums!
Microsoft MSN, Live, Hotmail, Outlook email users may not be receiving emails. We are working to resolve this issue. Please add support@steelsoldiers.com to your trusted contacts.
The Stryker uses a planetary geared hub which is huge compared to this wheel.
I'd look for it being off of a South African armored vehicle, or something like the International Harvester MXT.