What is the outside diameter of the inner ring?

The O.D. is listed as 16.3125 inches, though a note states that for the author's 17" rims the dimension is 18 1/2".

What is the inside diameter and width of the inner ring?

The I.D. is 11.9375 inches and the ring width is 2.1875 inches.

Does this ring drawing apply to different rim sizes?

The note indicates the dimensions are size-specific: for the author's 17" rims the relevant dimension is 18 1/2", so measurements would need adjusting for other rim sizes.

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DIY Beadlock Inner Ring Blueprint - Dimensions & Bolt Hole Circle Specs

Dimensioned diagram of a wheel inner ring with OD, ID, width and bolt circle

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Dimensioned drawing of a wheel inner ring detailing outer and inner diameters, width, hole size and bolt circle.

AI caption February 2013 · Photo 638 of 709

This document is a hand-made blueprint/diagram (titled "Inner ring") showing dimensions for fabricating an inner beadlock-style ring for a wheel. It depicts two concentric circles representing the ring, with labeled measurements: an outside diameter (O.D.) of 16.3125 inches, an inside diameter (I.D.) of 11.9375 inches, and a ring width of 2.1875 inches. Bolt hole specifications are given: hole diameter of 9/16 inch, distance from the inner diameter to the center of the hole of 0.875 inch, and a bolt hole circle diameter of 13.6875 inches. A handwritten-style note clarifies that the O.D. dimension shown is for the author's rims: "My dimension here is for my 17" rims is 18 1/2"." The drawing was uploaded to a 1995 Ford Bronco gallery and appears to be one page of a two-part set (a companion "outer_ring.jpg" exists in the same album), suggesting a DIY beadlock or ring fabrication project. A reader can learn the exact machining/cutting dimensions needed to reproduce the inner ring, including hole placement geometry for the bolt pattern.

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Frequently asked questions

What is the outside diameter of the inner ring?: The O.D. is listed as 16.3125 inches, though a note states that for the author's 17" rims the dimension is 18 1/2".
What is the inside diameter and width of the inner ring?: The I.D. is 11.9375 inches and the ring width is 2.1875 inches.
What size are the bolt holes and where are they placed?: The holes are 9/16" in diameter, located 0.875" from the inner diameter to the center of the hole, on a bolt hole circle with a diameter of 13.6875".
Does this ring drawing apply to different rim sizes?: The note indicates the dimensions are size-specific: for the author's 17" rims the relevant dimension is 18 1/2", so measurements would need adjusting for other rim sizes.