techbod,
My 2002 SL came with the optional rear wheel carrier, which I dont use unless on touring trips, and it secures the wheel only in the way yours seems to. Was the Y bracket a more recent design change or perhaps for cars specc'ed with standard spare wheels ?
What model is your car?
Anyway, why not take it off and save a considerable amount of weight 😬
Now DVA Powered SL No.174
Member No.109xx Pictures here