325/30R19 in inches & centimeters
Reference size: 325/30R19 has a nominal diameter of 26.68 inches and width of 12.80 inches, with a 3.84-inch sidewall on a 19-inch wheel.
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Nominal dimensions · 325/30R19
Side view
DOverall diameter26.68 in67.76 cm
SSidewall height3.84 in9.75 cm
WDWheel diameter19.00 in48.26 cm
Front view
DOverall diameter26.68 in67.76 cm
WSection width12.80 in32.50 cm
- DOverall diameter
- 26.68 in67.76 cm
- WSection width
- 12.80 in32.50 cm
- SSidewall height
- 3.84 in9.75 cm
- WDWheel diameter
- 19.00 in48.26 cm
- CCircumference
- 83.81 in212.87 cm
Approximate inch notation≈ 26.68 × 12.80R19
Diameter × width, with wheel diameter in inches, derived from the nominal size code. Use the tire maker’s catalog to choose an available product size.
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Nearby sizes
Compare these dimensions with the tire manufacturer’s published measurements and your vehicle’s tire and wheel specifications.
Detailed measurements and formulas for 325/30R19
Reference size: 325/30R19
| Measurement | inches | centimeters | millimeters |
|---|---|---|---|
| Overall diameter | 26.68 in | 67.76 cm | 677.6 mm |
| Section width | 12.80 in | 32.50 cm | 325.0 mm |
| Sidewall height | 3.84 in | 9.75 cm | 97.5 mm |
| Circumference | 83.81 in | 212.87 cm | 2,128.7 mm |
| Wheel diameter | 19.00 in | 48.26 cm | 482.6 mm |
| Revolutions / mi | 756.0 | ||
| Revolutions / km | 469.8 | ||
How we calculate it
325 = section width in millimeters; 30 = sidewall as a percentage of width; 19 = wheel diameter in inches.
Sidewall height: 325 × 30/100 = 97.5 mm
Overall diameter: (19 × 25.4) + (2 × 97.5) = 677.6 mm
Circumference: π × 677.6 ≈ 2,128.7 mm
Read the size-code guide Overall diameter: (19 × 25.4) + (2 × 97.5) = 677.6 mm
Circumference: π × 677.6 ≈ 2,128.7 mm
Reference model marked 245/40 ZR18 97Y.
Product image: Continental Tire
Tread-detail reference. Section width is calculated separately.
Product image: Continental TireWhat to check before changing size
Use the vehicle and tire specifications to check these three points:
- Vehicle placard and manual: match an approved size and the required load and speed ratings.
- Wheel specifications: check the tire maker’s wheel-width range and the wheel offset.
- Available space: check clearance at full steering lock and throughout suspension travel.
Method / data
Dimensions are calculated from the nominal size code. The reference catalog lists size codes; the tire maker’s specification sheet gives the exact model’s published measurements.
Calculation method and reference dataNearby sizes for 325/30R19
Sorted by nominal diameter difference. Compare the tire maker’s published dimensions for the sizes you shortlist.