ROGER sMITH [
beadlock@bigpond.net.au]
This might help.
Wide Tire Bead Help
BLIN-01Rev01
Problem: With large tires, typically 36 inches in
diameter and greater, the beadlock tubes may fail.
This involves Interco, Maxxis, BFG, ProComp,
Goodyear and most other brands. The failures can
range from long slits to a series of small holes. This occurs at the tire bead-beadlock Bead
intersection. The problem is caused by the wide tire
bead saw-tooth edge.
Background: We have discovered that all tires are not created equal as international wheel specifications
assume. They specify that the space behind the bead bump on the wheel shall be 0.750 inch/19mm. And
further assume that the tire bead shall be 0.625 inch/16mm wide. However, larger tires have wider beads.
Some may be as wide as 1.0 inch/25.4mm. Hence, the tire bead’s sharp, saw-tooth edge can create slits and holes.
Discussion: The international specifications rightfully assume
that the standard 0.625 inch tire beads will seat completely
behind/to the left of the 0.750 inch wide area behind the bead
bump. But for wider tire beads, a portion of the sharp inside edge
of the tire bead will project beyond the bead bump. This causes
two beadlock problems: 1) It may prevent the beadlock Case from
moving to seat properly and 2) the sharp edge may cause tube
failure.
Solution: Using a small diameter drum sander, smooth off/round the sharp tire bead edge. Further, in assembly, exercise all proper beadlock installation practices, and in particular, use lots of powder (see BLIN-02
Powdering Beadlock Help). If you run out of powder, you may buy any bath, baby or talc powder from any local source.
Stolen from
Coyote Enterprises LLC
Harry Lewellyn