325/55R22 in inches & centimeters
Reference size: 325/55R22 has a nominal diameter of 36.07 inches and width of 12.80 inches, with a 7.04-inch sidewall on a 22-inch wheel.
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Nominal dimensions · 325/55R22
Side view
DOverall diameter36.07 in91.63 cm
SSidewall height7.04 in17.88 cm
WDWheel diameter22.00 in55.88 cm
Front view
DOverall diameter36.07 in91.63 cm
WSection width12.80 in32.50 cm
- DOverall diameter
- 36.07 in91.63 cm
- WSection width
- 12.80 in32.50 cm
- SSidewall height
- 7.04 in17.88 cm
- WDWheel diameter
- 22.00 in55.88 cm
- CCircumference
- 113.33 in287.86 cm
Approximate inch notation≈ 36.07 × 12.80R22
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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Wheels
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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 325/55R22
Reference size: 325/55R22
| Measurement | inches | centimeters | millimeters |
|---|---|---|---|
| Overall diameter | 36.07 in | 91.63 cm | 916.3 mm |
| Section width | 12.80 in | 32.50 cm | 325.0 mm |
| Sidewall height | 7.04 in | 17.88 cm | 178.8 mm |
| Circumference | 113.33 in | 287.86 cm | 2,878.6 mm |
| Wheel diameter | 22.00 in | 55.88 cm | 558.8 mm |
| Revolutions / mi | 559.1 | ||
| Revolutions / km | 347.4 | ||
How we calculate it
325 = section width in millimeters; 55 = sidewall as a percentage of width; 22 = wheel diameter in inches.
Sidewall height: 325 × 55/100 = 178.75 mm
Overall diameter: (22 × 25.4) + (2 × 178.75) = 916.3 mm
Circumference: π × 916.3 ≈ 2,878.6 mm
Read the size-code guide Overall diameter: (22 × 25.4) + (2 × 178.75) = 916.3 mm
Circumference: π × 916.3 ≈ 2,878.6 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 325/55R22
Sorted by nominal diameter difference. Compare the tire maker’s published dimensions for the sizes you shortlist.