At Jamuna Tire & Rubber Industries Ltd., quality isn't just a standard—it’s a commitment. Every Truck and Bus Radial (TBR) tyre undergoes a meticulous inspection process to ensure flawless performance, durability, and safety on the road.
From visual inspections to advanced uniformity testing, this 8-step quality assurance process guarantees that every tyre meets national and international standards before it reaches the market.
1. External Surface Inspection – Spotting the Smallest Imperfections
🔍 Why It Matters: Surface defects can compromise tyre integrity, leading to premature failure and safety risks.
✔️ Inspect the tread and sidewall for cracks, cuts, blisters, bulges, or irregularities. Even minor surface flaws can lead to catastrophic failure under load.
✔️ Ensure the tread pattern is uniform, with no distortions or uneven wear that could impact traction and handling.
✔️ Remove foreign materials (stones, metal fragments, or road debris) lodged in the tread, which can cause punctures or internal damage over time.
✔️ Examine the sidewall for uniformity, ensuring a smooth, even finish with no rough textures or visible abrasions.
2. Tread Uniformity – Precision Engineering for Longevity
🔍 Why It Matters: Uneven tread wear can lead to vibrations, poor fuel efficiency, and reduced tyre lifespan.
✔️ Measure tread depth consistency across the entire tyre circumference—no shallow or excessively worn sections should be present.
✔️ Verify that the tread pattern is perfectly aligned to prevent misalignment issues that may cause irregular wear or poor road grip.
3. Sidewall Integrity – The Backbone of Tyre Strength
🔍 Why It Matters: Sidewalls support the structural integrity of the tyre and protect against external shocks and road impacts.
✔️ Check for cracks, abrasions, bulges, or wrinkles—even the slightest flaw can weaken the tyre under high stress.
✔️ Ensure that all sidewall markings (load index, speed rating, and manufacturing details) are clearly visible and correctly placed for regulatory compliance.
✔️ Examine the reinforced layers in the sidewall to confirm that there are no inconsistencies affecting load-bearing capacity.
4. Bead and Rim Compatibility – The Perfect Fit for Safety
🔍 Why It Matters: A secure bead-to-rim fit prevents air leaks, blowouts, and uneven wear.
✔️ Inspect the bead area for any deformities, cracks, or separations that could affect rim seating.
✔️ Ensure that there is no rust, dirt, or contamination in the bead area, as this could prevent a proper seal with the rim, leading to air leakage and poor stability.
✔️ Confirm that the bead structure maintains its elasticity and shape, ensuring a firm grip on the wheel rim.
5. Uniformity & Deflection Testing – The Science of Perfection
🔍 Why It Matters: Deflections and irregularities can lead to imbalanced tyres, causing vibrations, steering issues, and excessive wear.
✔️ Conduct a roundness check to detect any visual deformities or deviations from the ideal shape.
✔️ Perform a spin test to identify any vibrations, wobbles, or defects in the tyre’s internal construction.
✔️ Use mechanical sensors to measure any minor structural inconsistencies that could affect road performance.
6. Final Pre-Shipment Inspection – Ensuring Perfection Before Delivery
🔍 Why It Matters: The last line of defence before a tyre reaches the market—no room for errors!
✔️ Conduct a final comprehensive inspection to verify that all quality control parameters have been met.
✔️ Ensure that the tyre is properly inflated to the manufacturer’s recommended pressure, ensuring an accurate assessment of shape and structure.
✔️ Double-check serial numbers and production batch details to maintain traceability and quality tracking.
7. Documentation & Reporting – Data-Driven Quality Control
🔍 Why It Matters: Systematic record-keeping ensures continuous improvement and accountability.
✔️ Log every inspection result, documenting even minor defects to track quality trends.
✔️ Maintain detailed records of batch inspections, ensuring that production meets or exceeds quality benchmarks.
✔️ Flag defective tyres for corrective action, preventing subpar products from reaching the market.
8. Compliance with Global Standards – Setting the Benchmark in Bangladesh
🔍 Why It Matters: A tyre is only as good as its ability to meet safety and regulatory requirements.
✔️ Ensure every tyre conforms to international safety and quality regulations, including:
- DOT (Department of Transportation – USA)
- ISO (International Organization for Standardization)
- ECE (Economic Commission for Europe) Standards
✔️ Validate that the tyre meets manufacturer specifications, such as: - Tread wear indicators
- Pressure tolerance limits
- Load-carrying capacity & speed ratings
✅ Only tyres that pass these rigorous inspections will carry the Jamuna Tire name—a mark of reliability, durability, and innovation.
Why This Process Matters for Bangladesh’s Tyre Industry
By implementing this comprehensive TBR tyre inspection system, Jamuna Tire & Rubber Industries Ltd. is:
🚛 Reducing reliance on imported tyres by producing high-quality, locally manufactured alternatives.
🛡️ Ensuring top-tier safety for commercial fleets, logistics companies, and transport operators.
🔬 Pioneering cutting-edge technology to enhance the durability and longevity of tyres.
📈 Strengthening Bangladesh’s position in the global tyre industry, setting new benchmarks for excellence.
🔥 Quality isn’t an option—it’s a promise. Jamuna Tire delivers the performance you can trust.
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