Tires with thicker beads may require the use of shims to ensure the beadlock ring is properly seated against the face of the wheel. This ICON Alloys 15” Beadlock Double Shim Kit includes .090” thick aluminum shims that can be stacked to fit tires of various bead thicknesses too the 15” UTV Compression beadlock wheels. Proper use of beadlock shims will also reduce stress and fatigue on the ring bolts.