145/70-6 tubeless tires come already mounted on the rim. Do not require a separate tube, just bolt them on your ATV go karts mini quads 4 wheelers.. Heavy 4 ply rated nylon construction resists punctures and abrasions (Not cheap 2 ply rated tires). Provides versatility for a mix of terrains and applications. Package includes: 4x 145/70-6 tires with 6 rims.