Overview
ISO 9258:1989 is an international standard that provides guidance on wiper blade length for passenger cars. Rather than mandating performance criteria, it establishes two standardized ranges of blade lengths to be used as a practical guide for selection and interchangeability. The standard presents these sizes in millimetres and clarifies the nominal definition of wiper blade length to support consistent specification across manufacturers and aftermarket suppliers.
Key Topics and Requirements
- Scope: Defines two ranges of wiper blade lengths for passenger cars - a short list and an extended list - to guide selection.
- Short list (mm): 350, 400, 450, 500, 550, 600, 650, 700.
- Extended list (mm): ranges from 250 up to 700; table entries include 250, 280, 330, 350, 380, 400, 425, 450, 475, 500, 530, 550, 560, 600, 630, 650, 670, 700.
- Definition: Wiper blade length is defined as the length of the rubber part of the wiper blade (nominal rubber wiping element).
- Fixing axis position: The wiper blade fixing axis shall be in the middle of the nominal wiper blade length - ensuring symmetrical mounting and predictable wipe coverage.
- Use: Table 1 is explicitly presented as a guide for choice of wiper blades for passenger cars (selection aid rather than regulatory mandate).
Applications
- Automotive OEM design: assists vehicle designers and systems engineers in selecting standardized blade lengths for new passenger car models to simplify supply chain and serviceability.
- Aftermarket parts: helps aftermarket manufacturers and retailers offer a consistent range of replacement blades that match common vehicle requirements.
- Service and repair: enables technicians and service centers to identify correct blade lengths quickly, improving maintenance accuracy and inventory management.
- Component standardization: supports procurement and parts-listing practices by harmonizing the lengths offered across suppliers, reducing SKU complexity.
- Regulatory and conformity checks: useful reference for bodies and testing labs when verifying that a vehicle’s wiper blades conform to commonly accepted dimensional practices.
Related Standards
- ISO 9258 was prepared by ISO/TC 22 (Road vehicles). For comprehensive wiper-system specification and performance, consult other ISO and industry standards covering wiper system performance, mounting interfaces, and visibility requirements (refer to relevant ISO automotive and road-vehicle standards).
Keywords: ISO 9258:1989, wiper blade length, passenger cars, wiper systems, wiper blades, blade length list, rubber part length, fixing axis.
