225/65R17 Tire Size
A 225/65R17 tire has a nominal calculated diameter of approximately 28.52 inches (724.3 mm), a nominal section width of about 8.86 inches (225 mm), and a sidewall height of about 5.76 inches (146.3 mm).
225/65R17 in Inches
When converted to US customary units, a nominal 225/65R17 tire measures approximately 28.52 inches in overall height with a section width of 8.86 inches mounted on a 17-inch wheel.
Note: The dimension 28.5" × 8.9" R17 is an approximate nominal descriptive conversion, not a physical flotation catalog tire designation.
225/65R17 Dimensions Table
The table below summarizes all derived nominal geometric parameters for the 225/65R17 size in both US customary and metric units.
| Measurement Parameter | Inches (US) | Millimeters (Metric) |
|---|---|---|
| Nominal Section Width | 8.86 in | 225 mm |
| Sidewall Height (65%) | 5.76 in | 146.3 mm |
| Wheel (Rim) Diameter | 17.00 in | 431.8 mm |
| Nominal Overall Diameter (Height) | 28.52 in | 724.3 mm |
| Nominal Radius | 14.26 in | 362.1 mm |
| Nominal Circumference | 89.58 in | 2275.5 mm |
| Theoretical Revolutions | 707 revs/mile | 439 revs/km |
What Does 225/65R17 Mean?
The markings on the sidewall of a 225/65R17 tire represent standard ISO metric dimensions:
The 225 indicates a nominal section width of 225 millimeters (approximately 8.86 inches).
The sidewall height is 65% of the nominal section width, measuring 146.3 mm (5.76 inches).
R indicates radial construction, where the main carcass cords run approximately radially from bead to bead.
Designed to fit a wheel (rim) with a diameter of 17 inches (431.8 mm).
225/65R17 Dimensional Context & Proportions
225/65R17 has a nominal calculated diameter of 28.52 inches, placing it about 0.48 inches below a nominal 29-inch diameter.
Its 65-series aspect ratio means the nominal sidewall height is 65% of the 225 mm section width, giving a calculated sidewall height of 146.3 mm (5.76 in).
The 225 in 225/65R17 represents a nominal section width of 225 mm, which converts to approximately 8.86 inches.
Compare 225/65R17 With Another Tire Size
Nearby 17-Inch Tire Sizes by Nominal Diameter
The table below lists alternative standard tire sizes mounted on 17-inch wheels that fall within a ±3.0% nominal diameter window relative to 225/65R17.
| Nearby Size | Diameter | Diameter Delta | Width Delta | Sidewall Delta |
|---|---|---|---|---|
| 225/65R17Current | 28.52" | Baseline (0.0%) | 8.86" | 5.76" |
| 215/65R17 | 28.00" | -0.51" (-1.8%) | -0.39" | -0.26" |
| 255/55R17 | 28.04" | -0.47" (-1.7%) | +1.18" | -0.24" |
| 235/60R17 | 28.10" | -0.41" (-1.4%) | +0.39" | -0.21" |
| 235/65R17 | 29.03" | +0.51" (+1.8%) | +0.39" | +0.26" |
| 255/60R17 | 29.05" | +0.53" (+1.9%) | +1.18" | +0.27" |
±3.0% is used only as a configurable discovery window for identifying dimensionally nearby sizes. It is not a safety limit, compatibility threshold, replacement recommendation, or vehicle-fitment approval.
Nominal vs Actual Tire Dimensions
The dimensions listed on this reference page are nominal calculated figures derived from standard tire-size geometry. Tire-industry standards and manufacturer specifications are referenced where relevant.
Actual mounted dimensions can vary by tire manufacturer and model, tread design, measuring rim width, production tolerances, tread wear, and test or operating conditions. Consult the tire manufacturer’s published specifications when measured dimensions are required.
Technical Boundaries & Fitment Verification
Changing tire specifications may require separate load-capacity and cold inflation pressure verification. Dimensional size alone does not determine vehicle load class, speed rating, or approved wheel-width ranges.
Frequently Asked Questions About 225/65R17 Tires
How tall is a 225/65R17 tire?
A nominal 225/65R17 tire has an overall calculated diameter (height) of 28.52 inches (724.3 mm). Physical mounted height can vary slightly between tire manufacturers, tread depths, and inflation pressures.
How wide is a 225/65R17 tire in inches?
A 225/65R17 tire has a nominal section width of 225 mm, which converts to approximately 8.86 inches. Actual mounted cross-section width can vary depending on wheel rim width, tire model, and manufacturing tolerances.
Is 225/65R17 considered a 29-inch tire?
In casual automotive reference sizing, a 225/65R17 tire (nominal diameter of 28.52 inches) is generally grouped within the "29-inch" nominal diameter category.
What is the sidewall height of a 225/65R17 tire?
The sidewall height of a 225/65R17 tire is 5.76 inches (146.3 mm). This is calculated by taking 65% of the 225 mm section width.
How many revolutions per mile does a 225/65R17 tire make?
A nominal 225/65R17 tire makes approximately 707 revolutions per mile (439 revolutions per kilometer).
Content is based on cited tire-industry standards, manufacturer documentation, and technical references where relevant.