Tire Comparison Report Generator
Export a tire comparison report with inputs, data sources, formulas and calculated differences. Print or save as PDF for records and quotes.
Export inputs, sources, and calculated differences.
Tire Comparison Report Generator: Tire Size Inputs
Compare two tire sizes here. Use the formulas and reference tables below for this tool's specific calculation.
How Tire Comparison Report Generator Works?
The Tire Comparison Report Generator puts a tire comparison into one document. It includes the inputs, data sources and calculated results. Follow the 4 steps below to keep the report traceable.
Run a comparison
Compare 2 or more sizes or setups with any calculator on the site.
Tag the sources
Mark each value as nominal (from the size code), published (from a spec sheet) or measured.
Add notes
Type vehicle details, customer name or job number.
Export
Print the report or save the report as a PDF with a date stamp.
Tire Comparison Report Generator Formula
The Tire Comparison Report Generator records each result with its formula, its inputs and its source type, so a reader can repeat every number.
Result = Formula(Inputs) [Source]Nominal | Published | MeasuredΔ = Value₂ − Value₁ ; Δ% = Δ ÷ Value₁ × 100- Formula
- The equation used for the line
- Inputs
- The entered values
- Source
- Where each input came from
Worked example
A report for 225/45 R17 to 245/40 R18 lists the diameter line as OD = 2 × 245 × 40 ÷ 100 + 18 × 25.4 = 653.2 mm [Nominal] and the difference line as +18.9 mm (+2.98%).
Tire Comparison Report Generator Conversion Table
The Tire Comparison Report Generator conversion table lists the 7 sections of an exported report.
| Section | Contents |
|---|---|
| Inputs | Tire 1, Tire 2, wheel width and offset, vehicle notes |
| Sources | Size code, tire maker spec sheet, measured rollout, placard |
| Calculated differences | Diameter, width, sidewall, circumference, revs, speed error |
| Fitment notes | Inner and outer edge movement, arch gap, ±3% check |
| Ratings | Load index, speed rating, UTQG, EU label |
| Formulas | Every formula used, with units |
| Disclaimer | Nominal values, check with tire maker and vehicle maker |
What is Tire Comparison Report Generator?
A Tire Comparison Report Generator is a tool that turns a tire or wheel comparison into a document with inputs, sources, formulas and results. A report creates a record that a customer, inspector or insurer can check.
Source tags separate nominal values from published and measured values. A reader sees which numbers are estimates and which numbers come from the tire maker or a tape measure.
The report keeps the formulas visible, so every figure can be recalculated by hand.
What are the uses of Tire Comparison Report Generator?
There are 4 main uses of the Tire Comparison Report Generator, including customer quotes and modification records.
Customer quotes
Attach a fitment report to a quote.
Modification records
Keep a record of size changes for inspection or insurance.
Fleet documentation
File a report for each approved size change.
Dispute evidence
Document the basis of a fitment recommendation.