Tire Comparison Chart Generator
Create dimension and specification tables for several tire sizes. Export a clean comparison chart in mm and inches for print or web.
Create dimension and specification tables.
Tire Comparison Chart 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 Chart Generator Works?
The Tire Comparison Chart Generator works by calculating a fixed set of dimensions for each chosen size and arranging the results as columns in one table. The tool uses 4 steps.
Add sizes as columns
Type up to 6 sizes, for example 225/45 R17, 225/40 R18 and 245/40 R18.
Pick the rows
Choose rows such as diameter, width, sidewall, circumference, revs and percent difference.
Pick units
Choose mm, inches or both in each cell.
Export
Copy the chart as HTML, CSV or an image for a website, quote or print.
Tire Comparison Chart Generator Formula
The Tire Comparison Chart Generator fills each cell with Cell(row, column) = f_row(size_column), where f_row is the formula for that row.
OD = 2 × W × AR ÷ 100 + Rim × 25.4C = π × ODRPM = 1,609,344 ÷ C ; RPK = 1,000,000 ÷ CΔ% = (OD_col − OD_1) ÷ OD_1 × 100- f_row
- Formula for the row
- size_column
- Tire size in the column
Worked example
A 3-column chart for 225/45 R17, 225/40 R18 and 245/40 R18 with 6 rows produces 18 cells. The difference row reads —, +0.46% and +2.98%.
Tire Comparison Chart Generator Conversion Table
The Tire Comparison Chart Generator conversion table is a sample chart with 3 sizes and 6 rows.
| Row | 225/45 R17 | 225/40 R18 | 245/40 R18 |
|---|---|---|---|
| Overall diameter | 634.3 mm (24.97 in) | 637.2 mm (25.09 in) | 653.2 mm (25.72 in) |
| Section width | 225 mm (8.86 in) | 225 mm (8.86 in) | 245 mm (9.65 in) |
| Sidewall | 101.3 mm (3.99 in) | 90.0 mm (3.54 in) | 98.0 mm (3.86 in) |
| Circumference | 1,993 mm (78.5 in) | 2,002 mm (78.8 in) | 2,052 mm (80.8 in) |
| Revs per mile / km | 808 / 502 | 804 / 500 | 784 / 487 |
| Diameter vs column 1 | — | +0.46% | +2.98% |
What is Tire Comparison Chart Generator?
A Tire Comparison Chart Generator is a tool that builds a formatted comparison table for any set of tire sizes. Tire shops, wheel retailers and content writers use charts in quotes, product pages and articles.
The generator fixes the formulas, so every chart uses the same math and the same rounding.
Exported charts show nominal values. A note under the chart states the basis of the numbers.
What are the uses of Tire Comparison Chart Generator?
There are 4 main uses of the Tire Comparison Chart Generator, including shop quotes and product pages.
Shop quotes
Attach a size chart to a customer quote.
Product pages
Add a size table to a wheel package listing.
Forum posts
Share a clean table instead of a screenshot.
Printed guides
Print a size chart for the counter.