Compare tire sizes, calculate speedometer error, and find plus-size options. The complete tire sizing tool for enthusiasts and professionals.
| Dimension | Original | New | Difference |
|---|---|---|---|
| Overall Diameter | 26.7" | 26.3" | -0.42" |
| Section Width | 225mm | 235mm | +10mm |
| Sidewall Height | 4.87" | 4.16" | -0.71" |
| Circumference | 84.0" | 82.7" | -1.31" |
| Revs/Mile | 754 | 766 | +1.6% |
Accurate diameter, circumference, and speedo calculations
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Complete speed and load references
"Finally a tire calculator that shows all the dimensions I need. The plus-size guide saved me hours of research."
"Love the speedometer accuracy chart. Now I know exactly what speed I'm actually going with my new tires."
"The vehicle database is incredibly helpful. Found OEM specs for my Tacoma and the recommended upgrades."
Use our professional tire size calculator to compare sizes, check speedometer accuracy, and find plus-size options for your vehicle.