is it possible that the tires and wheels were installed last, after the interior was finished and broadcast sheets all tucked away? Maybe the trunk lid tire info was written by one of last people to have access to the broadcast sheets, because the tire guys would not have a sheet to reference. I wonder if that’s why some cars built (in other plants?) have a broadcast sheet on the back of the glovebox and no trunk writing, because that sheet was used until the car was completely finished?
And even before the engine and driveline were "married". The "recipe" for assembling a car didn't change that much IMO from plant to plant, maybe the way components were delivered to those points and on which side of the assembly line some of the items may have been installed or placed (LA assembly plant jack instruction on B-bodies is typically on the left of the trunk lid versus the right side in other B-body plants for some reason?) Did the large "build" sheet that was sometimes on the front of the car on the assembly line have the wheel/tire/spare info on it?
