Description
Tioga OS20 PowerBlock — 60 Tpi, Wire Bead
Overview
The practice-grade OS20 PowerBlock features all the same tread and rubber features as the S-Spec version, but with a more robust 60 TPI casing and wire bead construction. Designed specifically for BMX racing application, this tire delivers reliable performance for training and practice sessions where durability is prioritized over maximum weight savings.
Key Features
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Practice-grade construction — More robust 60 TPI casing and wire bead for enhanced durability during training
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Same tread and rubber features as S-Spec — Proven PowerBlock tread pattern with UTC Rubber Compound
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60 TPI casing — Lower thread count for increased durability and puncture resistance compared to higher TPI race versions
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Wire bead — Traditional steel bead for secure rim fit; durable and reliable for repeated use
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OS20 specific sizing — Designed for oversize 20" BMX wheels (451mm ISO/ETRO)
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Race application — Engineered for BMX racing training and practice
Technical Specifications
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Application: Race
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Material: 60 TPI casing, UTC Rubber Compound, Wire Bead
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Bead: Wire Bead
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TPI: 60
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Available sizes:
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OS20 x 1.85" — 430g / 15.17 oz
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OS20 x 1.60" — 348g / 12.27 oz
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Compatibility & Ideal Use Cases
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Wheel size compatibility: OS20 wheels (451mm ISO/ETRO) — oversize 20" standard
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Rim compatibility: OS20 rims (451mm) with wire bead compatible bead seats
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Tire width compatibility:
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OS20 x 1.60" — For narrower OS20 rims and lighter riders
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OS20 x 1.85" — For wider OS20 rims and heavier riders or more traction
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Tube compatibility: OS20 inner tubes matching tire width range
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Best for: BMX racers training on OS20 platform; practice and backup wheelsets; riders prioritizing durability over race-day weight savings
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Ideal use: Practice sessions, training laps, backup race wheels, team fleet tires
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Not suitable for: Standard 20" wheels (406mm ISO/ETRO — verify OS20 compatibility); race day weight-optimized builds; riders seeking folding bead weight savings