Retreaded tire treads having improved submerged voids and methods for forming the same

A method of forming a retreaded tire comprising the steps of:

• providing a tire carcass configured to receive a tire tread along an annular tread-receiving area, the annular tread-receiving area arranged along a radially outer side of the tire carcass and having a width extending laterally across a width of the tire carcass and a length extending annularly around the tire carcass;
• providing a pre-formed tire tread comprising:
• a tread body having a length, a width, and a thickness, the thickness being bounded by a top side and a bottom side;
• and,
• a submerged void arranged along the bottom side and extending into the tread thickness to a top outermost end located below the top side of the tread, the submerged void having a length extending in a direction of the tread width and an opening arranged along the bottom side when the tread is in an uninstalled configuration, the opening having a molded width of less than 1 millimeter (mm) where the submerged void comprises a pair of opposing sides extending from the top outermost end to the bottom side of the tread to define a width of the submerged void, where the width of the submerged void continuously narrows as the submerged void extends from the top outermost end until reaching the bottom side of the tread, where the opening of the submerged void extends in a direction of the submerged void length along an alternating, non-linear path;
• and,
• assembling a retreaded tire by arranging the tire tread atop a bonding layer in an installed configuration, the bonding layer arranged between the tire tread and the tire carcass and comprising an uncured bonding material, where, in the installed configuration, the opening is substantially closed.