Wheel and Wheel Trim Weathering Testing for Paint Coatings

SAE J2633 defines laboratory and Florida exposure procedures for evaluating weathering performance of paint systems used on automotive wheels and wheel trim.

SAE J2633™ JAN2026 is an SAE Surface Vehicle Recommended Practice for evaluating paint systems used on automotive wheels and wheel trim. It covers Carbon Arc Weatherometer, Xenon-Lamp Weatherometer, QUV, and Florida weathering exposure procedures. The document defines evaluation criteria including gloss change, chalking, color change, blistering, adhesion, filiform corrosion, corrosion creepback, and surface rust. It also provides equipment guidance, ASTM rating scales, recommended test durations, and references to related SAE and ASTM methods.

Application Scope: Automotive wheel and wheel trim paint coating development, qualification, durability testing, weathering evaluation, and quality assurance.