The invention relates to improvements in the breaker structure for radial type pneumatic tires. The structure according to the invention comprises at least two superposed strips of textile material having at least one strip of metallic material interposed therebetween and an additional metallic or equivalent strip arranged radially outermost of the aforementioned strips. The improvement in the present invention resides in the fact that at least one of the textile strips is folded so as to provide a fold line along each edge of the structure.
