Thank you! I tried to make it make sense. What's likely happening here is that Jansa uses blank 22.5" wheel centers meant for heavier trucks, so they are closer to 1/2" thickness than the ones made back then for our medium duty rigs; then they just machine the pilot and drill the holes to fit our bolt pattern. Works fine, we get a stronger wheel, but the downside is the studs come up short.


1965 C60 school bus | 1967 GMC 6500 school bus