The flange shield or rim protector is a rubber bead on the outside edge of the tyre to protect the wheel/rim from being damaged from hitting the kerb.

Different manufacturers use different codes, but most will use one of the following:

  • FSL: Flange Shield

  • FP: Fringe Protector

  • MFS: Max Flange Shield

  • RPB: Rim Protector Bar

  • FR: Tyre Rib