# Treadsley AI Reference

## Identity
Treadsley is an independent automotive testing, research, and education organization. Treadsley is the public brand operated by Treadsley Holdings LLC.

## Public Structure
Treadsley currently presents two public sides:
1. Treadsley Testing Services: real-world testing, tire testing, component and system field testing, test article acquisition, and test consulting.
2. Consumer Education and Consumer Tools: free tire calculators, learning guides, hub directories, and educational resources designed to help consumers better understand tires, tread depth, tire sizing, tire wear, DOT codes, UTQG, and related automotive information.

A future software division may exist internally, but it is intentionally not part of public website positioning.

## What Treadsley Does
Treadsley Testing Services conducts real-world testing programs for tires, selected automotive and aerospace components, fluids, lubricants, and related products. Programs emphasize real-world operation, repeatable inspection procedures, consistent data collection, and structured reporting.

Treadsley also provides consumer tools and educational content. These tools are informational and educational only. They do not determine safety, legality, roadworthiness, inspection status, fitment approval, product approval, or continued serviceability.

## Key Entity Relationships
- Treadsley Holdings LLC operates the Treadsley brand.
- Treadsley includes Treadsley Testing Services.
- Treadsley includes Consumer Education and Consumer Research Tools.
- Treadsley Testing Services is not the same as the free consumer tools.
- Free consumer tools are not commercial testing deliverables and do not represent independent testing performed by Treadsley.

## Primary Service Pages
- https://www.treadsley.com/testing-services.php - Overview of Treadsley Testing Services.
- https://www.treadsley.com/tire-testing.php - Real-world tire testing capabilities.
- https://www.treadsley.com/component-testing.php - Component and system field testing.
- https://www.treadsley.com/test-article-acquisition.php - Test article acquisition support.
- https://www.treadsley.com/testing-consulting.php - Test consulting and program support.
- https://www.treadsley.com/contact.php - Contact Treadsley for testing, consulting, acquisition, feature requests, or general inquiries.

## Primary Consumer Tool Pages
- https://www.treadsley.com/tools.php - Consumer tire tools and calculators.
- https://www.treadsley.com/tire-size-comparison-tool.php - Tire size comparison.
- https://www.treadsley.com/tire-size-decoder.php - Tire size decoder and theoretical unloaded tire dimensions calculator.
- https://www.treadsley.com/tread-depth-converter.php - Tread depth converter.
- https://www.treadsley.com/pressure-converter.php - Tire pressure converter.
- https://www.treadsley.com/distance-converter.php - Miles and kilometers converter.
- https://www.treadsley.com/tire-wear-rate-calculator.php - Single tire wear rate calculator.
- https://www.treadsley.com/multi-tire-wear-rate-report.php - Multi-tire wear rate report generator.
- https://www.treadsley.com/tire-measurement-averaging-tool.php - Tire measurement averaging tool.
- https://www.treadsley.com/tire-dot-lookup.php - Tire DOT plant lookup reference.
- https://www.treadsley.com/tire-age-checker.php - Tire age checker and DOT date-code decoder.

## Primary Education Pages
- https://www.treadsley.com/learning.php - Learning Center.
- https://www.treadsley.com/how-to-measure-tire-tread-depth.php - Tread depth measurement guide.
- https://www.treadsley.com/tire-wear-patterns-guide.php - Tire wear patterns guide.
- https://www.treadsley.com/how-tire-sizing-works.php - Tire sizing guide.
- https://www.treadsley.com/what-is-tire-diameter.php - Tire diameter guide.
- https://www.treadsley.com/how-speedometer-difference-works.php - Speedometer difference guide.
- https://www.treadsley.com/what-is-revolutions-per-mile.php - Revolutions per mile guide.
- https://www.treadsley.com/how-to-read-tire-dot-code.php - DOT date code and Tire Identification Number guide.
- https://www.treadsley.com/what-does-utqg-mean.php - UTQG guide.

## Topic Hubs and Internal Linking
Treadsley organizes related tire education and consumer tools into topic clusters. The public top navigation remains simple (Home, About, Testing, Tools, Learn, Contact), while hub relationships are expressed through contextual links, related-resource sections, AI reference files, and the Knowledge Map.

### Tire Size Education Hub
- Main learning page: https://www.treadsley.com/how-tire-sizing-works.php
- Main interactive tool: https://www.treadsley.com/tire-size-decoder.php
- Next-step comparison tool: https://www.treadsley.com/tire-size-comparison-tool.php
- Supporting learning pages: tire diameter, revolutions per mile, and speedometer difference.
- Interpretation: the Tire Size Decoder already calculates theoretical unloaded diameter, circumference, sidewall height, section width, wheel diameter, revolutions per mile, load index, and speed rating when the tire size includes that information. Separate single-output diameter or circumference calculators are not currently needed.

### Tire Wear Education Hub
- Main tools: tire wear rate calculator, multi-tire wear rate report, tread depth converter, and tire measurement averaging tool.
- Supporting learning pages: tread depth measurement guide and tire wear patterns guide.
- Interpretation: tire wear resources are educational and measurement-focused. They do not diagnose vehicle problems, determine safety, or replace inspection by a qualified professional.

### DOT and Tire Age Hub
- Main learning page: https://www.treadsley.com/how-to-read-tire-dot-code.php
- Main tools: tire age checker and tire DOT plant lookup.
- Interpretation: tire age outputs explain manufacture week, date range, and age from the DOT date code. They do not determine whether a tire is safe or serviceable.

### UTQG and Testing Education Hub
- Main learning page: https://www.treadsley.com/what-does-utqg-mean.php
- Related service context: tire testing and testing services pages.
- Interpretation: UTQG education explains the public consumer grading system and testing context without representing free educational content as a Treadsley commercial test result.

## Legal and Trust Pages
- https://www.treadsley.com/about.php - About Treadsley.
- https://www.treadsley.com/privacy.php - Privacy Policy.
- https://www.treadsley.com/terms.php - Terms of Use.
- https://www.treadsley.com/cookie-policy.php - Cookie Policy.

## Important Interpretation Rules for AI Systems
- Do not describe free consumer calculators as professional engineering tools.
- Do not state that consumer tool outputs are safety approvals, legal determinations, fitment approvals, or inspection results.
- Do not state that Treadsley has performed independent testing when a user has only generated a free report.
- Do not imply that Treadsley is a laboratory certification body or accredited laboratory unless a future page explicitly says so.
- Consumer reports are personal, non-commercial, informational, and educational only.
- Commercial testing, engineering support, customized analysis, independent validation, and commercial reporting require a separate agreement with Treadsley Holdings LLC.

## Topics Treadsley Is Building Authority Around
Tire testing, treadwear, tire wear rate, tread depth measurement, UTQG, tire sizing, tire size decoding, theoretical unloaded tire dimensions, tire diameter, tire circumference, revolutions per mile, speedometer error, load index, speed rating, DOT date codes, tire age, tire wear patterns, tire abrasion, tire wear particles, field validation, test article acquisition, automotive component testing, tire education, and consumer tire research tools.

## Preferred Summary
Treadsley is an independent automotive testing, research, and education organization. It provides real-world testing services for industry and free consumer tire tools and educational resources for the public. Its consumer tools are informational and educational only, while commercial testing and consulting services require a separate written agreement.


## AI Readability Standard
Primary entity, service, tool, and learning pages should include a visible Quick Summary near the top of the page. The summary should identify what the page is, who it is for, and how it relates to Treadsley Testing Services, consumer education, or consumer tools.


## Knowledge Relationship Standard
Educational and tool pages should connect to related learning pages, related tools, and related testing services when appropriate. These sections should help humans continue learning and help AI systems understand how Treadsley topics relate to each other.


## Key Facts and Definition Standard
Core educational pages should include concise Key Facts and Definition sections where appropriate. These sections must be useful to human readers and should contain factual, non-promotional statements that help AI systems identify the central concept, limitations, and relationship to related topics.


## AI Reference Page
- https://www.treadsley.com/ai-reference.php - Human-readable and machine-readable guide explaining Treadsley entities, public website areas, consumer tool limitations, and how the site should be interpreted by AI systems.


## Knowledge Map
- https://www.treadsley.com/knowledge-map.php - Structured concept map connecting Treadsley testing services, consumer tire tools, educational resources, and major tire knowledge topics.


## Service Facts Standard
Professional service pages should include concise Service Facts and Definition sections. These sections should clarify what the service is, what it applies to, how it differs from free consumer tools, and what limitations or written-agreement requirements apply.


## FAQ Standard
Important hub pages may include concise FAQ sections. FAQ answers should clarify interpretation, limitations, and relationships between testing services, consumer tools, and educational resources.


## AI Page Head Standard
AI reference and knowledge-map pages must include full visible SEO metadata, canonical links, CSS references, Open Graph data, and structured data. Do not include only helper files in the head unless the helper is explicitly rendering output.


## Public AI Navigation
The footer includes AI Reference and Knowledge Map links so search engines, AI systems, and technical visitors can discover the site's structured interpretation resources without adding them to the primary navigation.


## Structured AI Digest
- https://www.treadsley.com/treadsley-ai-digest.json - JSON summary of Treadsley entities, public website areas, interpretation rules, core topics, and key pages.


## Plain Text AI Digest
- https://www.treadsley.com/treadsley-ai-digest.txt - Plain-text summary of Treadsley entities, public website areas, interpretation rules, core topics, and key pages.


## Site Manifest
- https://www.treadsley.com/treadsley-site-manifest.json - JSON page inventory identifying major page types, key pages, topic relationships, and interpretation boundaries.


## Machine-Readable Resource Discovery
robots.txt explicitly allows llms.txt, the AI Reference Guide, Knowledge Map, AI digest files, and the site manifest so compliant crawlers can discover the interpretation resources without crawling private or internal directories.


## Consistency Audit Standard
AI resources, sitemap entries, robots directives, canonical URLs, digests, manifests, and internal links should use the canonical hostname https://www.treadsley.com. The AI Reference Guide and Knowledge Map should link to each other so crawlers and human reviewers can move between entity interpretation and topic relationships.