SOUND-SUPPRESSOR-EQUIPPED PNEUMATIC TIRE, AND SOUND SUPPRESSOR FOR TIRES

The purpose of the present invention is to inhibit deterioration in the external appearance of a sound suppressor, even when used in cold areas. This sound-suppressor-equipped pneumatic tire includes: a pneumatic tire provided with a tread section; and a sponge-like sound suppressor which is affixed to a tire inner cavity-side surface of the tread section, and which extends in the peripheral direction of the tire. In the sound suppressor, a plurality of slits are formed in an exposed surface which faces the tire inner cavity.