Maxxis has unveiled its latest advancement in downhill tire technology with the introduction of the new DH-Casing. This innovative casing promises enhanced grip, increased puncture protection, and the ability to run up to 0.2 bar lower tire pressures—all without a significant weight penalty. To assess the validity of these claims, we subjected the new DH-Casing to rigorous laboratory tests and real-world trail evaluations.
Evolution of the DH-Casing
The DH-Casing has long been recognized as Maxxis’s most robust tire construction, a staple in the downhill World Cup circuit. As downhill bikes become faster and trails more demanding, the need for tires that can withstand increased forces is paramount. Maxxis’s response is the redesigned DH-Casing, engineered to absorb small impacts sensitively while providing stability during hard hits and high cornering forces. Notably, Maxxis claims that this new casing allows for a reduction in tire pressure by up to 0.2 bar.
Key Features of the New DH-Casing
At first glance, the new DH-Casing is distinguishable by its updated, colorful logo on the sidewall, aligning with Maxxis’s other mountain bike casings like EXO, EXO+, and Double Down. This uniform branding enhances the visual coherence of Maxxis’s MTB tire lineup.
The casing maintains a dual-layer construction but introduces several critical enhancements:
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Enhanced Bead Protection: A stiffer butyl insert at the bead increases stability at lower pressures and improves resistance to pinch flats by 28%.
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Sidewall Reinforcement: An additional protective layer in the sidewall boosts resistance to cuts and punctures by 24%, and by 28% on the tread area.
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Improved Casing Overlap: The overlap between the two casing layers has been extended into the shoulder area, enhancing overall structural integrity.
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Higher Thread Density: Replacing the previous two 60-TPI layers, the new design employs two finer layers with a 120-TPI density, offering a balance between durability and suppleness.
Laboratory Testing Results
In our controlled laboratory tests, we compared the new DH-Casing to its predecessor using two Maxxis Minion DHR II tires in the 29 x 2.4-inch size with the 3C MaxxGrip compound.
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Weight: Contrary to Maxxis’s claim of minimal weight increase, our measurements showed the new DH-Casing to be approximately 63 grams (5%) heavier than the previous version. This slight increase is negligible in the context of downhill performance.
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Rolling Resistance: The new casing exhibited a 3% reduction in rolling resistance, rolling at 50.5 watts compared to 52.2 watts for the older model. This improvement, while modest, could contribute to marginal gains in speed.
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Puncture Resistance: The new DH-Casing demonstrated a 13–38% increase in resistance to tread punctures and a 16% improvement in sidewall puncture resistance, aligning closely with Maxxis’s stated enhancements.
Trail Performance
On the trail, the new DH-Casing’s performance was impressive. Riders reported significantly increased grip, especially in corners and off-camber sections, thanks to the enhanced sidewall stability. The ability to run lower tire pressures without compromising stability allowed for better terrain conformity and comfort. Even with reduced pressures, the tire maintained its shape and responsiveness, instilling confidence in aggressive riding scenarios.
Conclusion
Maxxis’s new DH-Casing represents a significant advancement in downhill tire technology. It offers improved puncture protection, enhanced grip, and the flexibility to run lower tire pressures without a substantial weight penalty. Both laboratory tests and real-world trail evaluations confirm that the new DH-Casing delivers on its promises, making it a compelling choice for downhill enthusiasts seeking reliability and performance.
For more information on the new DH-Casing and other Maxxis products, visit their official website.