Messy wheel fitment sites - lightweight reverse-lookup bolt pattern database

Messy wheel fitment sites - lightweight reverse-lookup bolt pattern database targets a $600M = 500k online auto parts sellers worldwide x $1.2K ACV (annual API/subscription or embed fee) total addressable market with medium saturation and a year-over-year growth rate of 6-12% annual growth in online automotive aftermarket sales.

Key trends driving demand: mobile-first commerce -- buyers increasingly shop auto parts on phones, so lightweight, fast fitment tools reduce dropoff; aftermarket personalization -- rising demand for wheels and bespoke fitment increases need for accurate compatibility data; API integrations -- merchants prefer embeddable APIs over linking to external clunky guides, enabling B2B monetization.