Editorial Policy
How TireCalculator.net develops, reviews, verifies, and updates automotive calculation tools and technical reference articles.
1. Technical Accuracy & Mathematical Integrity
All calculator engines and worked examples are developed against documented engineering formulas and verified against standards published by the Tire and Rim Association (TRA) and the European Tyre and Rim Technical Organisation (ETRTO).
Calculations undergo automated unit testing across standard metric, P-metric, LT-metric, and flotation sizing matrices before deployment.
2. Writing Voice & Technical Nuance
Our content aims to explain practical mechanical realities clearly to vehicle owners and automotive enthusiasts. We enforce strict editorial guidelines:
- Practical explanation first: Translate dimensional deltas into physical effects (speedometer variance, clearance changes, gearing shifts) before introducing algebraic formulas.
- Distinguish nominal from real rolling data: Clearly communicate that nominal geometric calculations (C = πD) represent rigid geometric models and that real rolling behavior varies with load, inflation, and tire construction.
- Avoid unsupported universal rules: Industry heuristics (such as ±3% diameter variance) are described as comparison references, not universal safety thresholds.
- Zero marketing hype: Avoid promotional filler, fabricated claims, or sensationalized automotive advice.
3. Source Verification & Hierarchy
We prioritize primary technical standards over secondary commercial summaries:
- Primary Standards: TRA Yearbooks, ETRTO Standards Manuals, NHTSA/FMVSS regulations, and official vehicle OEM tire fitment placards.
- Manufacturer Technical Specifications: Official tire manufacturer data sheets for load index, inflation pressures, and measured rolling revs/mile.
- Secondary References: Established automotive engineering references and technical educational materials (e.g., Tire Rack Tech Center) used strictly for educational context.
For a full breakdown of references, see our Sources & Standards page.
4. Regular Review & Revision Schedule
Pages and calculators are periodically reviewed to ensure calculation parity with evolving tire size designations, vehicle fitment changes, and updated industry standards. When errors or ambiguities are identified, pages are updated through our documented Corrections Policy.
5. Commercial Independence
TireCalculator.net provides independent, objective calculation tools. While the site may explore non-intrusive advertising or affiliate partnerships in the future to support free hosting and development, commercial considerations never influence mathematical formulas, calculated outputs, or editorial conclusions.