Our tire quality control process. Pre-shipment inspection, DOT/ECE testing, factory audits, and defect classification standards.
Every tire exported by THAI OTR SUPPLIERS passes our comprehensive quality control program. Factory Audit: we verify ISO 9001:2015 certification, production equipment calibration, and raw material sourcing. In-Process Inspection: monitoring during vulcanization, tread application, and casing assembly. Pre-Shipment Inspection: 100% visual inspection for cosmetic defects, tread depth measurement against specification (±0.5mm tolerance), sidewall marking verification (DOT code, size, pattern, brand), and air retention testing at rated pressure for 24 hours. Documentation: every shipment includes factory test certificates, material traceability records, and compliance certificates for your destination market (DOT, ECE, CCC, GCC, INMETRO, or BIS). Our defect rate is below 0.3% — well within international quality standards.