Klhanson, 11" for inside diameter new seems odd since maximum diameter is 11.091"
Not that odd. That's 3/32"+/- larger in diameter.
I'm not sure that the ID would actually be 11.000", but would be surprised if it isn't.
The issue is weakening the corner by getting it too thin. These are cast iron and you don't want the friction surface breaking away from the part that bolts on to the hub. Stopping just the cylindrical part wouldn't help much with braking.
