185/65R14 in inches & centimeters

Starting size: Calculated from the size code: 23.47 inches tall, 7.28 inches wide, with a 4.73-inch sidewall on a 14-inch wheel.

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Tire dimensions · 185/65R14

Side view

DOverall diameter23.47 in59.61 cm

SSidewall height4.73 in12.03 cm

WDWheel diameter14.00 in35.56 cm

Front view

DOverall diameter23.47 in59.61 cm

WSection width7.28 in18.50 cm

DOverall diameter: 23.47 in59.61 cm
WSection width: 7.28 in18.50 cm
SSidewall height: 4.73 in12.03 cm
WDWheel diameter: 14.00 in35.56 cm
CCircumference: 73.73 in187.27 cm

Illustrative tread and wheel. Measurements come from the tire size code.

Approximate size in inches≈ 23.47 × 7.28R14

Diameter × width R wheel diameter, all in inches. This conversion comes from the size code; check the tire maker’s catalog for available sizes.

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Nearby sizes

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All units and formulas for 185/65R14

Starting size: 185/65R14

Measurement	inches	centimeters	millimeters
Overall diameter	23.47 in	59.61 cm	596.1 mm
Section width	7.28 in	18.50 cm	185.0 mm
Sidewall height	4.73 in	12.03 cm	120.3 mm
Circumference	73.73 in	187.27 cm	1,872.7 mm
Wheel diameter	14.00 in	35.56 cm	355.6 mm
Revolutions / mi	859.4
Revolutions / km	534.0

How we calculate it

185 = section width in millimeters · 65 = sidewall as a percentage of width · 14 = wheel diameter in inches.

Sidewall height = 185 × 65/100 = 120.25 mm
Overall diameter = (14 × 25.4) + (2 × 120.25) = 596.1 mm
Circumference = π × 596.1 ≈ 1,872.7 mm

Read the size-code guide

Toyo Tires Extensa A/S II · 185/65R14 · Official size listing

Side of a Continental tire marked 245/40 ZR18 97Y — **Continental ExtremeContact Sport 02**
The code on this tire reads 245/40 ZR18 97Y.
Product image: Continental Tire

ExtremeContact Sport 02 tread, showing its grooves and shoulder blocks — **Continental ExtremeContact Sport 02**
This is the tread surface. Section width is measured across the sidewalls.
Product image: Continental Tire

Before you change tire size

Check these points in the vehicle and tire specifications:

Vehicle placard and manual: use an approved size and the required load and speed ratings.
Wheel and tire specifications: check the approved wheel-width range and wheel offset.
Space on the vehicle: check at full steering lock and through the suspension’s travel.

How these sizes are calculated

Dimensions come from the nominal size code. The catalog supplies the codes; the tire maker’s specification sheet supplies measurements for a particular model.

Calculation method and data sources

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