Sulfur crosslinkable rubber composition

The invention relates to a sulfur-crosslinkable rubber compound, in particular for vehicle pneumatic tires, belts, straps and hoses, which is distinguished by, among other things, improved rolling resistance behavior. For this purpose, the rubber compound contains at least the following constituents: - 5 to 95 phr of at least one styrene-butadiene rubber which is functionalized with phthalocyanine groups and/or hydroxy groups and/or epoxy groups and/or silane-sulfide groups and whose styrene content is 0 to 12 wt. % and which in the unvulcanized state has a glass transition temperature (T g) according to DSC of -75 to -120 °C, and - 5 to 95 phr of at least one further rubber, and - 20 to 300 phr of at least one silica.