We assume that they used the same mount as on the fenders. These are a bit of a guess for us because we couldn't find a photo of one that didn't have the three legs that raised the wheel up off the fender like the later Panzer III/StuG.III. It's obvious from photos that the early roadwheel mounts were not as high. It's also obvious from some of the photos of the Kubinka vehicle that there were three holes in the right rear fender so the mount must have been similar. I cut off the legs, sanded the disc flat and then glued the bolted part of the leg back on. DML provide two PE brass bases for the two rear locations.