Aramid fibers combine low weight and flexibility with extreme strength and dimensional stability It is the combination of these properties which makes Aramid a tailor-made fiber for radial fires. The outstanding characteristics for these tires are: low weight and energy savings with additional progress in the field of comfortable rolling, good steering behavior compactness, etc. A further interesting aspect can be seen in the environmental properties of Aramid. The production does nor pose any problems and requires relatively low energies. Aramid is an organic fiber that can easily be disposed of by incineration. - The contribution deals with economic aspects of the fiber for tires.