A method of forming a retreaded tire comprising: providing an unbonded retreaded tire, which comprises a pre-cured tread arranged annularly around an outer circumference of an annular tire carcass with a bonding layer comprising an uncured bonding material arranged between the pre-cured tread and the annular tire carcass, the unbonded retreaded tire having a thickness extending between an inner and an outer side of the unbonded retreaded tire, where the annular tire carcass comprises a pair of sidewalls spaced apart in an axial direction of the unbonded retreaded tire, each of the pair of sidewalls extending radially inward from an undertread portion to a bead portion; forming a degassing assembly by arranging a flexible degassing membrane, around an outer circumference of the unbonded retreaded tire, the degassing assembly having one or more vacuum chambers that as a collective substantially surround at least an outer side of the unbonded retreaded tire; placing each of the one or more vacuum chambers under at least partial vacuum pressure; performing a degassing operation by pressurizing a degassing chamber while each of the one or more vacuum chambers in the degassing assembly are at least under partial vacuum pressure, the degassing chamber being pressurized to a pressure sufficient to remove gas from within the unbonded retreaded tire such that the unbonded retreaded tire is substantially free of gas to provide an unbonded degassed tire; disassembling the degassing assembly by separating the unbonded degassed tire from the flexible degassing membrane; and bonding the unbonded degassed tire to form a bonded retreaded tire by pressurizing a curing chamber and sufficiently heating the curing chamber to cure the bonding layer of the unbonded degassed tire. providing an unbonded retreaded tire, which comprises a pre-cured tread arranged annularly around an outer circumference of an annular tire carcass with a bonding layer comprising an uncured bonding material arranged between the pre-cured tread and the annular tire carcass, the unbonded retreaded tire having a thickness extending between an inner and an outer side of the unbonded retreaded tire, where the annular tire carcass comprises a pair of sidewalls spaced apart in an axial direction of the unbonded retreaded tire, each of the pair of sidewalls extending radially inward from an undertread portion to a bead portion; forming a degassing assembly by arranging a flexible degassing membrane, around an outer circumference of the unbonded retreaded tire, the degassing assembly having one or more vacuum chambers that as a collective substantially surround at least an outer side of the unbonded retreaded tire; placing each of the one or more vacuum chambers under at least partial vacuum pressure; performing a degassing operation by pressurizing a degassing chamber while each of the one or more vacuum chambers in the degassing assembly are at least under partial vacuum pressure, the degassing chamber being pressurized to a pressure sufficient to remove gas from within the unbonded retreaded tire such that the unbonded retreaded tire is substantially free of gas to provide an unbonded degassed tire; disassembling the degassing assembly by separating the unbonded degassed tire from the flexible degassing membrane; and bonding the unbonded degassed tire to form a bonded retreaded tire by pressurizing a curing chamber and sufficiently heating the curing chamber to cure the bonding layer of the unbonded degassed tire.