nother split rim question

[scotty85]

i just got a 68 cab and chassis C 30. it has what i at first thot were split rims in the rear,but after doing a search and looking at some pics,i dont think that it does.

they have what looks like the flat part of a wheel stud visible around the rim,where the center meets it. i dont know if they are actually some sort of stud,a big spot weld or what. but at any rate,they look like normal rims,i cant see any wierd lockrings or anything.one of the tires is flat and seperated from the bead,and it looks like any other wheel.

also from what i gather,most,or all,split rims used tubed tires. these are a wierd size,but are tubeless. they are an 8-75, 6 ply rated sidewall, "courser traction" tire.

i plan to use this truck to pull a large goosneck trailer,after giving it some TLC,of course. i dont mind running the 17.5 size till its time for tires,as long as they are not unsafe or dangerous.

can anyone confirm my thots that this is a normal wheel? if not anyone got any pics of different types of dually splits to compare em to? the only pics ive been able to find on here so far have all been of single wheels.

if its a normal wheel,anyone got anything to say,good or bad,bout the 17.5 size?

thanx a bunch