I am glad to see you got them. I would love to find a set of 34''s for a 52 vac we are working on but there kind of like hens teeth unless you buy them new and then they are like gold. I think I am telling you right when I say 52 was the only year case put them on the vac and I have been told mainly to help with road speed but didn't change the gearing. They went back to 28'' in 53 but all 52's came with them. Have also been told that some dealers changed some of the late 51's to 34's according to buyers prefence. Either way it dosen't matter you got one heck of a buy on those tires and wheels and don't worry about the cracks those are nylons and will run forever. The only reason I mentioned about the years is if you hear of a 52 being parted it should have the centers you need.