Hi guys , sorry for the crazy question but im rebuildin my rear drum brakes and im trying to figure out if I have 10 or 11 inch. When i measure from outer drum to outer drum i have 11 and 3/4 but when i measure inner drum to inner drum i get 10 and 3/4, i just cant remember which to go by. Also my drum cover sticks out some kinda oval shape , most ive seen the drum cover is flat.... Is this right? Sorry for the rookie question but all help is greatly appreciated thanks.
Brake drums are measured by the inside diameter. Neither of those dimensions make sense.
Thanks goin by pic i have 10 inch drums.