<p>This study focuses on evaluating the abrasion resistance of binary rubber blends composed of natural rubber (NR), styrene–butadiene rubber (SBR), and butadiene rubber (BR), addressing the limited understanding of how different rubber types influence their mechanical performance. The novelty of this work lies in providing new insights into elastomer blend behavior by examining the interrelationship among tear strength, crosslink density, and wear resistance. In addition, the vulcanization behavior and crosslinking density were examined while maintaining a constant carbon black/nanosilica hybrid filler composition across all samples. Vulcanization results showed that NR-containing compounds exhibited the fastest cure time (T90), whereas SBR-containing compounds had one of the slowest. The mass loss of the compound containing 20 phr SBR and 80 phr NR decreased by 61% compared with the NR-only compound, due to the optimal crosslinking density contributed by the SBR component. Similar trends were observed in both SBR and BR-containing compounds, though the abrasion resistance of the BR-containing blends was slightly lower than that of the SBR-containing ones. These findings confirm the potential of SBR and BR for abrasion-resistance applications in rubber formulations. Furthermore, the tear and tensile strengths of the compounds correlated with both crosslinking density and bound rubber, underscoring the role of crosslinking level and crack growth in the abrasion mechanism. Overall, strategically blending elastomers—particularly with increased SBR and BR content—enhances the mechanical and abrasion properties of rubber composites, making them well-suited for applications requiring high durability and wear resistance.</p>