Patent ID: 7395849

Claim:
Method for dismounting self-supporting tyres ( 1 ) from the relative rim ( 2 ), said self-supporting tyres comprising an outer cover ( 10 ) that contains a rigid auxiliary ring ( 16 ) provided with two flexible sidewalls ( 18 , 19 ), characterised in that it comprises the operating steps of: a) lifting a first bead ( 14 ) of the outer cover ( 10 ) away from the rim ( 2 ), so as to make a first sidewall ( 18 ) of the auxiliary ring ( 16 ) accessible; b) inserting a dismounting tool ( 5 ) between an elastic edge of said first sidewall ( 18 ) of the auxiliary ring ( 16 ) and an edge of the rim ( 2 ); c) moving said dismounting tool ( 5 ), so as to grip the elastic edge of said first sidewall ( 18 ) and to turn a part thereof away from said rim ( 2 ); d) pushing said turned part of the first sidewall ( 18 ) outwards, making it slide in contact with the dismounting tool ( 5 ), until it passes over the edge of the rim ( 2 ); e) rotating the auxiliary ring ( 16 ) about the central axis (A) of the rim ( 2 ), so that all of the elastic edge of the first sidewall ( 18 ) interacts with the dismounting tool ( 5 ), and is thus completely lifted away from the rim ( 2 ); f) lifting both the second sidewall ( 19 ) of the auxiliary ring ( 16 ) and the second bead ( 15 ) of the outer cover ( 10 ) away from the rim ( 2 ).