{
  "name": "Treadsley Site Manifest",
  "url": "https://www.treadsley.com/treadsley-site-manifest.json",
  "lastUpdated": "2026-07-07",
  "publisher": {
    "name": "Treadsley",
    "legalName": "Treadsley Holdings LLC",
    "url": "https://www.treadsley.com/"
  },
  "purpose": "Structured page inventory for Treadsley.com to help search engines, AI systems, developers, and reviewers understand page types, relationships, and interpretation boundaries.",
  "pageTypes": {
    "ServicePage": "Professional testing, consulting, field evaluation, or acquisition service page.",
    "ToolPage": "Consumer calculator, converter, lookup, or report tool for personal, non-commercial, informational, and educational use.",
    "LearningPage": "Plain-English educational resource explaining tire concepts and related measurements.",
    "ReferencePage": "Machine-readable or human-readable site interpretation resource.",
    "LegalPage": "Privacy, cookie, terms, or legal-use limitation page.",
    "HubPage": "Navigation or collection page organizing related resources."
  },
  "pages": [
    {
      "url": "https://www.treadsley.com/",
      "type": "HubPage",
      "name": "Home",
      "relatesTo": [
        "Testing Services",
        "Consumer Tools",
        "Learning Center"
      ]
    },
    {
      "url": "https://www.treadsley.com/about.php",
      "type": "ReferencePage",
      "name": "About Treadsley",
      "relatesTo": [
        "Treadsley Holdings LLC",
        "Treadsley Testing Services",
        "Consumer Education"
      ]
    },
    {
      "url": "https://www.treadsley.com/testing-services.php",
      "type": "ServicePage",
      "name": "Treadsley Testing Services",
      "relatesTo": [
        "Tire Testing",
        "Component Field Testing",
        "Test Consulting",
        "Test Article Acquisition"
      ]
    },
    {
      "url": "https://www.treadsley.com/tire-testing.php",
      "type": "ServicePage",
      "name": "Tire Testing",
      "relatesTo": [
        "Tire Wear",
        "Treadwear Studies",
        "Benchmarking",
        "Abrasion-Related Research"
      ]
    },
    {
      "url": "https://www.treadsley.com/component-testing.php",
      "type": "ServicePage",
      "name": "Component and System Field Testing",
      "relatesTo": [
        "Components",
        "Fluids",
        "Lubricants",
        "Field Validation"
      ]
    },
    {
      "url": "https://www.treadsley.com/testing-consulting.php",
      "type": "ServicePage",
      "name": "Test Consulting and Program Support",
      "relatesTo": [
        "Program Design",
        "Route Development",
        "Inspection Planning",
        "Data Collection"
      ]
    },
    {
      "url": "https://www.treadsley.com/test-article-acquisition.php",
      "type": "ServicePage",
      "name": "Test Article Acquisition",
      "relatesTo": [
        "Tire Acquisition",
        "Component Acquisition",
        "Vehicle Acquisition",
        "Benchmarking"
      ]
    },
    {
      "url": "https://www.treadsley.com/tools.php",
      "type": "HubPage",
      "name": "Consumer Tire Tools Hub",
      "relatesTo": [
        "ToolPage",
        "Learning Center",
        "Tire Size Hub",
        "Tire Wear Hub",
        "DOT and Tire Age Hub",
        "Terms of Use"
      ],
      "navigationRole": "Primary tools directory for desktop and mobile users."
    },
    {
      "url": "https://www.treadsley.com/tire-size-decoder.php",
      "type": "ToolPage",
      "name": "Tire Size Decoder and Dimensions Calculator",
      "relatesTo": [
        "Tire Sizing",
        "Sidewall Markings",
        "Theoretical Tire Dimensions",
        "Load Index",
        "Speed Rating"
      ]
    },
    {
      "url": "https://www.treadsley.com/learning.php",
      "type": "HubPage",
      "name": "Learning Center Hub",
      "relatesTo": [
        "Tire Size Hub",
        "Tire Wear Hub",
        "DOT and Tire Age Hub",
        "UTQG and Testing Education Hub",
        "Consumer Tools"
      ],
      "navigationRole": "Primary learning directory for desktop and mobile users."
    },
    {
      "url": "https://www.treadsley.com/what-does-utqg-mean.php",
      "type": "LearningPage",
      "name": "What Does UTQG Mean?",
      "relatesTo": [
        "Treadwear",
        "Traction Grade",
        "Temperature Grade",
        "Tire Testing"
      ]
    },
    {
      "url": "https://www.treadsley.com/how-to-measure-tire-tread-depth.php",
      "type": "LearningPage",
      "name": "How to Measure Tire Tread Depth",
      "relatesTo": [
        "Tread Depth",
        "Measurement Averaging",
        "Wear Rate"
      ]
    },
    {
      "url": "https://www.treadsley.com/how-tire-sizing-works.php",
      "type": "LearningPage",
      "name": "How Tire Sizing Works",
      "relatesTo": [
        "Tire Size",
        "Diameter",
        "Revolutions Per Mile"
      ]
    },
    {
      "url": "https://www.treadsley.com/what-is-revolutions-per-mile.php",
      "type": "LearningPage",
      "name": "What Is Revolutions Per Mile?",
      "relatesTo": [
        "Tire Diameter",
        "Speedometer Difference",
        "Tire Size"
      ]
    },
    {
      "url": "https://www.treadsley.com/tire-wear-rate-calculator.php",
      "type": "ToolPage",
      "name": "Tire Wear Rate Calculator",
      "relatesTo": [
        "Tread Depth",
        "Wear Rate",
        "Learning Center"
      ]
    },
    {
      "url": "https://www.treadsley.com/multi-tire-wear-rate-report.php",
      "type": "ToolPage",
      "name": "Multi-Tire Wear Rate Report",
      "relatesTo": [
        "Tread Depth",
        "Wear Rate",
        "Report Storage",
        "Terms of Use"
      ]
    },
    {
      "url": "https://www.treadsley.com/ai-reference.php",
      "type": "ReferencePage",
      "name": "AI Reference Guide",
      "relatesTo": [
        "Treadsley",
        "AI Interpretation",
        "Knowledge Map",
        "AI Digest"
      ]
    },
    {
      "url": "https://www.treadsley.com/knowledge-map.php",
      "type": "ReferencePage",
      "name": "Knowledge Map",
      "relatesTo": [
        "Learning Pages",
        "Consumer Tools",
        "Testing Services",
        "AI Reference Guide"
      ]
    },
    {
      "url": "https://www.treadsley.com/treadsley-ai-digest.json",
      "type": "ReferencePage",
      "name": "JSON AI Digest",
      "relatesTo": [
        "Machine-Readable Summary"
      ]
    },
    {
      "url": "https://www.treadsley.com/treadsley-ai-digest.txt",
      "type": "ReferencePage",
      "name": "Plain Text AI Digest",
      "relatesTo": [
        "Machine-Readable Summary"
      ]
    },
    {
      "url": "https://www.treadsley.com/how-to-read-tire-dot-code.php",
      "type": "LearningPage",
      "name": "How to Read a Tire DOT Date Code",
      "relatesTo": [
        "DOT Date Code",
        "Tire Identification Number",
        "Tire Age Checker",
        "Tire DOT Plant Lookup"
      ]
    },
    {
      "url": "https://www.treadsley.com/tire-age-checker.php",
      "type": "ToolPage",
      "name": "Tire Age Checker",
      "relatesTo": [
        "DOT Date Code",
        "Tire Identification Number",
        "Tire Manufacturing Plant Lookup",
        "Tire Age"
      ]
    },
    {
      "url": "https://www.treadsley.com/tire-size-comparison-tool.php",
      "type": "ToolPage",
      "name": "Tire Size Comparison Tool",
      "relatesTo": [
        "Tire Size Education Hub",
        "Diameter Difference",
        "Speedometer Difference",
        "Revolutions Per Mile"
      ]
    },
    {
      "url": "https://www.treadsley.com/what-is-tire-diameter.php",
      "type": "LearningPage",
      "name": "What Is Tire Diameter?",
      "relatesTo": [
        "Tire Size Education Hub",
        "Theoretical Tire Dimensions",
        "Speedometer Difference"
      ]
    },
    {
      "url": "https://www.treadsley.com/how-speedometer-difference-works.php",
      "type": "LearningPage",
      "name": "How Speedometer Difference Works",
      "relatesTo": [
        "Tire Size Education Hub",
        "Tire Diameter",
        "Tire Size Comparison"
      ]
    },
    {
      "url": "https://www.treadsley.com/tire-dot-lookup.php",
      "type": "ToolPage",
      "name": "Tire DOT Plant Lookup",
      "relatesTo": [
        "DOT and Tire Age Hub",
        "Tire Identification Number",
        "Manufacturing Plant Lookup"
      ]
    },
    {
      "url": "https://www.treadsley.com/tread-depth-converter.php",
      "type": "ToolPage",
      "name": "Tread Depth Converter",
      "relatesTo": [
        "Tire Wear Education Hub",
        "Tread Depth",
        "Tire Wear Rate"
      ]
    },
    {
      "url": "https://www.treadsley.com/tire-measurement-averaging-tool.php",
      "type": "ToolPage",
      "name": "Tire Measurement Averaging Tool",
      "relatesTo": [
        "Tire Wear Education Hub",
        "Tread Depth Measurement",
        "Measurement Averaging"
      ]
    }
  ],
  "interpretationBoundaries": [
    "ToolPage outputs are not professional testing reports.",
    "LearningPage content is educational and does not replace manufacturer guidance, legal requirements, or professional inspection.",
    "ServicePage content describes possible professional services under separate written agreements.",
    "ReferencePage content is intended to clarify site interpretation for humans, search engines, and AI systems."
  ],
  "machineReadableResources": {
    "llms": "https://www.treadsley.com/llms.txt",
    "aiReference": "https://www.treadsley.com/ai-reference.php",
    "knowledgeMap": "https://www.treadsley.com/knowledge-map.php",
    "jsonDigest": "https://www.treadsley.com/treadsley-ai-digest.json",
    "textDigest": "https://www.treadsley.com/treadsley-ai-digest.txt",
    "siteManifest": "https://www.treadsley.com/treadsley-site-manifest.json"
  },
  "topicClusters": [
    {
      "name": "Tire Size Education Hub",
      "hubType": "Learning plus Tool cluster",
      "primaryPages": [
        "https://www.treadsley.com/how-tire-sizing-works.php",
        "https://www.treadsley.com/tire-size-decoder.php"
      ],
      "nextStepPages": [
        "https://www.treadsley.com/tire-size-comparison-tool.php",
        "https://www.treadsley.com/what-is-tire-diameter.php",
        "https://www.treadsley.com/what-is-revolutions-per-mile.php",
        "https://www.treadsley.com/how-speedometer-difference-works.php"
      ],
      "notes": "The decoder is the primary single-size tool and already returns theoretical diameter, circumference, sidewall height, section width, wheel diameter, revolutions per mile, load index, and speed rating where available."
    },
    {
      "name": "Tire Wear Education Hub",
      "hubType": "Learning plus Tool cluster",
      "primaryPages": [
        "https://www.treadsley.com/tire-wear-rate-calculator.php",
        "https://www.treadsley.com/multi-tire-wear-rate-report.php"
      ],
      "nextStepPages": [
        "https://www.treadsley.com/how-to-measure-tire-tread-depth.php",
        "https://www.treadsley.com/tread-depth-converter.php",
        "https://www.treadsley.com/tire-measurement-averaging-tool.php",
        "https://www.treadsley.com/tire-wear-patterns-guide.php"
      ],
      "notes": "Wear resources support education and measurement. They do not diagnose vehicle issues or determine tire safety."
    },
    {
      "name": "DOT and Tire Age Hub",
      "hubType": "Learning plus Lookup cluster",
      "primaryPages": [
        "https://www.treadsley.com/how-to-read-tire-dot-code.php",
        "https://www.treadsley.com/tire-age-checker.php"
      ],
      "nextStepPages": [
        "https://www.treadsley.com/tire-dot-lookup.php"
      ],
      "notes": "DOT resources explain Tire Identification Number structure, date-code age, and plant lookup information. They do not determine tire serviceability."
    },
    {
      "name": "UTQG and Testing Education Hub",
      "hubType": "Learning plus Service-context cluster",
      "primaryPages": [
        "https://www.treadsley.com/what-does-utqg-mean.php"
      ],
      "nextStepPages": [
        "https://www.treadsley.com/tire-testing.php",
        "https://www.treadsley.com/testing-services.php"
      ],
      "notes": "UTQG education explains the public consumer grading system and testing context without representing free content as a Treadsley test result."
    }
  ],
  "hubDirectoryIntent": "Tools.php and learning.php are intentionally maintained as hub directory pages so desktop and mobile visitors can reach major tools, learning guides, and knowledge hubs without depending on deep dropdown menus."
}