Rubber composition and vehicle tyre

The invention relates to a rubber mixture, in particular for vehicle tires, which is characterized by improved rolling resistance behavior and improved abrasion properties, and a vehicle tire. For this purpose, the rubber mixture contains at least the following constituents: - 5 to 100 phr of at least one polymer A according to the following formula I) contains: I) F-(P-Y-P-S x ) z -P-Y-P-F wherein S is a sulfur atom, and P is an elastomeric polymer chain obtained by anionic polymerization of at least one conjugated diene and optionally at least one vinyl aromatic compound in the presence of a diinitiator, and Y is a dicarbanion group derived from the diinitiator, and x is independently for each S x group an integer equal to 1 or greater, with the condition that x for at least one S x group is selected from the numbers 2, 3 and 4, and z is an integer from 1 to 160, and each F is independently a terminal group selected from the group consisting of -H, -SH, -SOH, -SCl, -SSCl, -SO 2 H and -SO 3 H, and - at least one filler.