I think my old Volvo had a pin that went in to some sorta poor fitting slot but I remember it not helping, the things you are getting would be very handy.Yeah true about cross threading. Hopefully these pins help, so I don't have to juggle the wheel while trying to get one of the bolts started!
My Vulva also had stupid wheels, all spokes on the outside and no support on the inside so one cracked as loads of them do. There's a Benz dealer near work that sells lots of new wheels for the same reason, our roads are not good for many Euro wheels.
I saw a broken Alcoa truck wheel a few weeks back, id hope it wasn't from a pot hole, two years of rain has been hard on the roads.