think he wants to know the diameter of the inside of the wheels so it goes over the center of the hub at the rear
i had this prob wi my mates rims i tried. was right pcd and et, but wouldn't go on the hub
You have hit the nail straight on the head.
I have the option to buy some ultra deep dish wheels but the centre bore is 56mm and I am not sure if it will fit over the centre of the hub.
Can anyone help me out??
Cheers
Alex