Lola spare rims

The weather is so nice I had to start working on the race car.  The spare tire rims I got from Eric are in need of a little work.  Besides cleaning I need to find bolts for 2 of the rims.  The early Lola rims didn't have the safety bead inside.  So I guess someone came up with the idea of placing a bolt through the rim to hold the tire on the rim in case of a flat.  Not sure if my other rims have a safety bead. 

One of 3 bolt holes.

The bolt would be placed in after the tire was mounted...I guess