An APC is a tired, wheeled vehicle meant for public roads and such. A tank has treads and has different locomation.
You are saying an apc is classified as a
WHEELED VEHICLE. There are many Armored personell carriers out their with treads. Their roles often conflict with IFVS which have treads and can be mistaken for a
TANK. You are thinking of the Army's Stryker ,the Marine's LAV, and Soviet BTR-60 as the only apcs around. Also the vehicle could be classified as an apc, but it was designed as an armored scout car.