Engineering Made Simple: The TireToInches Story
Born in a home garage out of frustration with confusing metric tire numbers, TireToInches.com has grown into America's premier independent vehicle fitment and tire conversion authority.
1. Why We Built TireToInches
If you own a pickup truck, Jeep, or SUV in North America, you have almost certainly encountered this frustrating scenario: you want to buy a set of aggressive 33-inch or 35-inch all-terrain tires, but every online tire shop, dealership sticker, and sidewall lists cryptic European metric codes like 285/70R17, 275/60R20, or 315/70R17.
Trying to figure out the true physical height in inches, whether the tire will rub on your factory suspension crash bars at full steering lock, how much your speedometer will be off at highway speeds, or whether your stock rims are wide enough requires digging through clunky forum threads or multiplying millimeter formulas on scratch paper.
We founded TireToInches.com to fix this broken experience. Our foundational motto is simple: "Web simple, para todos, sin tecnicismos"—delivering rigorous engineering math in clear, plain English that any driver can understand in 10 seconds.
2. Our Mission & Guiding Principles
Built on cutting-edge static architecture, our pages compile cleanly into lightweight HTML that loads in under 50 milliseconds with zero clunky pop-ups or layout shifts.
We don't just multiply numbers by 25.4. We map metric tires to true flotation standards (31", 33", 35", 37") and answer the ultimate question: "Will it rub on my truck?"
Every calculator, comparison tool, and fitment guide is completely free to the public. We never charge subscription fees or hide formulas behind paywalls.
3. Technical Standards & Engineering Foundations
Automotive tires and wheels are safety-critical mechanical components. An incorrect tire size, inadequate load capacity, or improper wheel offset can cause brake rotor warping, hub failure, or highway blowouts. That is why our calculation algorithms are strictly modeled after international standards:
The Tire and Rim Association, Inc. (TRA)
The primary standardizing body for the United States automotive industry. We use official TRA engineering tables to determine approved wheel rim width ranges, bead seat profiles, and recommended tire inflation pressures for both P-Metric (passenger) and LT (Light Truck / Load Range C, D, E, F) tires.
European Tyre and Rim Technical Organisation (ETRTO)
European specifications governing nominal section widths, aspect ratio curvature, and standard load index carrying capacities across international tire manufacturers.
SAE International (Society of Automotive Engineers)
We apply SAE vehicle clearance guidelines—specifically SAE Class S minimum wheel-well clearance standards (15mm tread / 13mm sidewall)—to verify snow chain compatibility and inner strut clearance.
ISO 4000-1 & NHTSA FMVSS Safety Standards
International definitions for metric passenger tire designations, paired with National Highway Traffic Safety Administration (NHTSA) Tire Pressure Monitoring System (TPMS) federal guidelines (FMVSS No. 138).
4. Meet the Team: Mechanics, Fabricators & Coders
TireToInches is maintained by a tight-knit collective of automotive enthusiasts, ASE-certified mechanical technicians, and software engineers who live and breathe vehicle modification. We don't write generic, theoretical content from an office cubicle—we test tools, mount tires, torque lug nuts, and measure clearance in real working garages.
Hands-on automotive practitioners dedicated to verifying truck clearance specs, inspecting tire wear patterns, auditing torque wrench calibrations, and reviewing workshop equipment.
Software developers building sub-50ms static calculators, 2D tire visualizer graphics, and dynamic gear ratio simulators that run entirely in your local browser.
5. Our Comprehensive Engineering Toolset
Over the years, we have expanded from a simple metric-to-inches conversion calculator into a complete automotive fitment suite featuring 15+ specialized tools:
6. How We Maintain Editorial Independence
TireToInches is supported entirely by display advertising and transparent affiliate partnerships (such as the Amazon Associates Program). When you buy tools or tires through links on our site, we may earn a referral fee at zero added cost to you.
Our affiliate relationships never dictate our technical verdicts. If a product is dangerous—such as using plastic zip ties on snow, using hollow plastic wheel chocks, or mounting tires with dish soap—we explicitly expose the risks, regardless of commercial commissions. For complete information on our testing standards, visit our Affiliate Disclosure.
Have a Correction or Question?
We actively update our vehicle fitment recommendations based on real community feedback. Reach out to our technical desk anytime.