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Re: 1970 GMC C2500 rear axle hub diameter?
Quote:
Originally Posted by tow rig
.....Are hub-centric rings needed for aftermarket wheels?........
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Rule of thumb is if the aftermarket wheels use a tapered lug nut, then they center off the lugs. If the wheels use a flanged nut that is flat on the bottom, the wheels center off the hubs (hub-centric). If you have any doubts, call the wheel manufacturer. If your wheels center off the lugs I would not be too concerned as for many years heavy trucks and buses used 'Budd' wheels which used tapered lug nuts (and studs for the inner wheels). They never came loose if properly torqued! Here is a picture of my '67, tapered nuts and a little gap around the hub:
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1967 GMC CM-2500 Camper Cruiser, 351E V-6, NP 435 4 speed, Dana 60, and factory A/C. 2012 GMC K-3500 WT regular cab, 6.0L Vortec, 6L90.
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