Jagdturret

[urumomo]

;D The outer bolts hold only the flimsy rim in place that retains the tire :





- - - and they evidently decided they needed even more bolts for the G , 24 vs 16 on the D & A models in those pix



and in case you want to know ,

The steel-wheel version actually does use a rubber ring to mount the steel "tire" :

 

[BeebleBrox]

Guess the engineers had a reason for that or there could have been some bolt nut in the engineer team with a very strong will.

 

[urumomo]

. . a " bolt nut " ,

OR -

A nut , bolt ?