Addition-crosslinkable silicone compositions contain (A) 100 parts by weight of polydiorganosiloxane(s) which has alkenyl groups and whose viscosity is from 5000 to 50,000,000 mPas at 25° C., having at least 2 alkenyl groups per molecule, and at least 0.15 mol % of alkenylsiloxane units, based on all siloxane units, (B) from 1 to 50 parts by weight of polydiorganosiloxane(s) whose viscosity is at least 5,000,000 mPas at 25° C., and having no alkenyl groups, (C) SiH-functional crosslinking agent(s), (D) hydrosilylation catalyst(s), and (E) from 3 to 90 parts by weight of filler(s) whose BET specific surface area is at least 50 m2/g. Vulcanizates of the addition-crosslinkable silicone compositions have low coefficients of friction.