Published Revolutions Comparator
Compare manufacturer-published revolutions per mile between two tires and against the nominal value calculated from the size code.
Compare manufacturer-listed rolling specifications.
Published Revolutions Comparator: Tire Size Inputs
Compare two tire sizes here. Use the formulas and reference tables below for this tool's specific calculation.
How Published Revolutions Comparator Works?
The Published Revolutions Comparator compares the revs-per-mile figures in tire makers' specification sheets. Use published figures for both tires so the comparison uses the same kind of data. Follow the 4 steps below.
Find the published figures
Copy the revs-per-mile value from each tire maker's product page or data book.
Enter both tires
Type the size, model and published value for Tire A and Tire B.
Compare the values
The comparator shows the gap in revolutions and in percent between the 2 published values.
Compare with nominal
The comparator calculates the nominal revs per mile from the size code and shows how far each published figure sits from the nominal value.
Published Revolutions Comparator Formula
The Published Revolutions Comparator formula is Δ% = (RPM_B − RPM_A) ÷ RPM_A × 100, using published values only.
Δ% = (RPM_B − RPM_A) ÷ RPM_A × 100C = 1,609,344 ÷ RPM_pub (mm)Δ_nom% = (RPM_pub − RPM_nom) ÷ RPM_nom × 100- RPM_pub
- Published revolutions per mile
- RPM_nom
- Nominal revs per mile from the size code
- C
- Implied loaded rolling circumference (mm)
Worked example
Two 265/70 R17 all-terrain tires list 653 and 664 revs per mile. The gap is 11 revolutions, or +1.7%. Both tires carry the same size code, yet the second tire rolls 1.7% less distance per turn.
Published Revolutions Comparator Conversion Table
The Published Revolutions Comparator conversion table shows the typical gap of 2% to 3% between nominal and published revolutions per mile for 6 sizes.
| Size | Nominal revs/mile | Typical published revs/mile | Gap | Implied rolling circumference |
|---|---|---|---|---|
| 265/70 R17 | 638 | 653 | +2.4% | 2,465 mm |
| 225/45 R17 | 808 | 829 | +2.6% | 1,941 mm |
| 205/55 R16 | 811 | 831 | +2.5% | 1,937 mm |
| 275/55 R20 | 636 | 651 | +2.4% | 2,472 mm |
| 235/45 R18 | 772 | 791 | +2.5% | 2,035 mm |
| LT285/75 R16 | 627 | 643 | +2.6% | 2,503 mm |
Published values in the table are representative examples. Values for a specific model come from that model's specification sheet.
What is Published Revolutions Comparator?
A Published Revolutions Comparator is a tool that compares the revolutions-per-mile values tire makers measure and print for their own products. Published values come from a tire rolling under its rated load and pressure, so the values reflect real-world rolling distance.
Two tires with identical size codes differ by 1% to 2% in published revolutions. Tread depth, carcass construction and mold shape change the real diameter.
AWD owners and fleet managers compare published values to match tires more closely than the size code allows.
What are the uses of Published Revolutions Comparator?
There are 4 main uses of the Published Revolutions Comparator, including AWD tire matching and brand switching.
AWD matching
Pick a replacement tire whose published revolutions match the other 3 tires.
Brand switching
Check how much a new brand changes speedometer readings in the same size.
Accurate calibration
Use a published value instead of a nominal value for speedometer programming.
Fleet standardization
Keep revolutions consistent across a fleet buying from several tire makers.
Related Core Tire Dimensions Tools
View All 134 Subtools →Compare two tire sizes.
Compare several sizes together.
Estimate nominal overall diameter.
Calculate absolute and percentage differences.
Estimate nominal circumference.
Compare estimated rolling distances.