Sulfur-crosslinkable rubber mixture, vulcanizate of the rubber mixture, and vehicle tyre

A sulfur-crosslinkable rubber mixture comprising at least the following constituents:

• at least one diene rubber;
• and
• 10 to 300 phr of at least one silica;
• and
• 1 to 22 phf (parts per hundred parts of filler by weight) of at least one silane A having general empirical formula A-I)
• (R1)oSi—R2—(S—R3)q—Sx—(R3—S)q—R2—Si(R1)o;
• and A-I)
• 0.5 to 30 phf of at least one silane B having general empirical formula B-I)
• (R1)oSi—R2—(S—R3)u—S—R2—Si(R1)0 B-I)
• wherein o may be 1 or 2 or 3;
• wherein the radicals R1 may be identical or different and are selected from C1-C10-alkoxy groups, C6-C20-phenoxy groups, C2-C10-cyclic dialkoxy groups, C2-C10-dialkoxy groups, C4-C10-cycloalkoxy groups, C6-C20-aryl groups, C1-C10-alkyl groups, C2-C20-alkenyl groups, C2-C20-alkynyl groups, C7-C20-aralkyl groups, halides or alkyl polyether group —O—(R6—O)r—R7, wherein the radicals R6 are identical or different and are branched or unbranched, saturated or unsaturated, aliphatic, aromatic or mixed aliphatic/aromatic divalent C1-C30-hydrocarbon group, r is an integer from 1 to 30, and the radicals R7 are unsubstituted or substituted, branched or unbranched monovalent alkyl, alkenyl, aryl or aralkyl groups, or two R1 correspond to a dialkoxy group having 2 to 10 carbon atoms
• wherein in that case o<3, or two or more silanes of formulae A-I) and/or B-I) may be bridged via radicals R1 or by condensation;
• with the proviso that in the formulae A-I) and B-I) in each (R′)oSi group at least one R1 is selected from the abovementioned options, wherein this R1 i) is bonded to the silicon atom via an oxygen atom or ii) is a halide;
• wherein the radicals R2 and R3 in each molecule and within a molecule may be identical or different and are branched or unbranched, saturated or unsaturated, aliphatic, aromatic or mixed aliphatic/aromatic divalent C1-C30-hydrocarbon groups;
• and,
• wherein x is an integer from 2 to 10 and q is 0 or 1 or 2 or 3;
• and wherein u is 1 or 2 or 3.