37 x 12.50 R16.5LT VFI Rubber Runflat Insert
Internal, single-piece rubber runflat inserts, sized specifically for use with a 37x12.5R16.5 LT tire and a 16.5" x 8.25" two-piece military rim.
This type of beadlock functions by physically keeping the beads of the tire spaced apart internally, ultimately forcing both sides to remain seated firmly against the lips of the rim. However, because the thickness of a tire's bead varies based on its size (and even manufacturer), this type of beadlock will often only work for the specific tire and rim combination they were originally designed for.
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