BoltPatternHQ is a fast, free wheel fitment & bolt pattern database covering 10,000+ vehicles (1992–2026). Whether swapping rims, checking torque specs, or building auto apps, we deliver verified OEM fitment: • Bolt patterns (PCD in mm & inches) • Center bore (CB) & wheel offset (ET) • Lug nut sizes & factory torque specs • Cross-vehicle rim compatibility finder • Ready-to-use CSV datasets & MCP server for AI agents Accurate, lightweight, and completely free to search.