[RalphG]

Had a flat on the 49 Mercury M68 (one ton) when we wanted to haul it home. And they are the old split "widowmakers". Only option I had was a spare wheel and tire stored on the farm. It was from a 49-53 GMC truck. It fit on the Mercury just fine and even the Mercury hub cap snapped right on. Not sure but I believe the GM wheels are the safer style with a separate lock ring.