225/65R16 tire size
A 225/65R16 tire is 27.5 inches (699 mm) tall and 8.9 inches (225 mm) wide, for a 16-inch wheel. Each sidewall is 5.8 inches (146 mm), 65% of the width, and the tire makes about 733 revolutions a mile.
Sources checked
| Dimension | 225/65R16 |
|---|---|
| Overall diameter | 27.52 in (699 mm) |
| Section width | 8.86 in (225 mm) |
| Sidewall height | 5.76 in (146 mm) |
| Aspect ratio | 65% |
| Rim diameter | 16 in |
| Circumference | 86.4 in (2,196 mm) |
| Revolutions per mile | 733 |
| Revolutions per km | 455 |
Compare 225/65R16 with another size
Metric, LT and flotation
At 60 mph on the speedometer you’re doing
58.9mph
−1.9% · the speedometer reads high
- Height
- −0.51 in (−13 mm)
- Width
- −0.39 in (−10 mm)
- Ground clearance
- −0.26 in (−7 mm)
- Each side, same wheel
- −0.20 in (−5 mm)
225/65R16 and 215/65R16 side by side
| Dimension | 225/65R16 | 215/65R16 | Change |
|---|---|---|---|
| Overall diameter | 27.52 in (699 mm) | 27.00 in (686 mm) | −0.52 in (−13 mm) |
| Section width | 8.86 in (225 mm) | 8.46 in (215 mm) | −0.40 in (−10 mm) |
| Sidewall height | 5.76 in (146 mm) | 5.50 in (140 mm) | −0.26 in (−6 mm) |
| Aspect ratio | 65% | 65% | |
| Rim diameter | 16 in | 16 in | |
| Circumference | 86.4 in | 84.8 in | −1.6 in |
| Revolutions per mile | 733 | 747 | +14 |
| Revolutions per km | 455 | 464 | +9 |
The working
- 225/65R16: sidewall = 225 mm × 65% = 146.3 mm = 5.76 in.
- Diameter = rim + 2 × sidewall = 16 + 2 × 5.76 = 27.52 in (699 mm).
- Circumference = π × 27.52 = 86.4 in; revolutions per mile = 63,360 ÷ 86.4 = 733.
- 215/65R16: sidewall = 215 mm × 65% = 139.8 mm = 5.50 in.
- Diameter = rim + 2 × sidewall = 16 + 2 × 5.50 = 27.00 in (686 mm).
- Circumference = π × 27.00 = 84.8 in; revolutions per mile = 63,360 ÷ 84.8 = 747.
- Speedometer. True speed = what it shows × new diameter ÷ old = 60 × 27.00 ÷ 27.52 = 58.9 mph.
- Ground clearance. Half the change in diameter: (27.00 − 27.52) ÷ 2 = −0.26 in.
Where the 225/65R16 numbers come from
The section width is 225 mm (8.86 inches), and each sidewall is 65% of it: 146.3 mm, or 5.76 inches. Two sidewalls and the 16-inch rim make 27.52 inches (699 mm).
One turn covers π × 27.52 = 86.4 inches, so the tire turns 733 times a mile and 455 times a kilometer.
What tire makers publish for 225/65R16
Inflated on the maker’s measuring rim. The percentage is the printed diameter against the 27.52 inches worked out above.
| Tire | Size as printed | Diameter | Width | Revs per mile |
|---|---|---|---|---|
| Toyo Extensa A/S II | 225/65R16 | 27.5 in (−0.1%) | 9 in | 756 |
Other 16-inch sizes against 225/65R16
Each size’s height against 225/65R16, and what a speedometer set for 225/65R16 shows at 60 mph with that size on.
| Size | Diameter | Width | Height change | At 60 mph shown |
|---|---|---|---|---|
| 205/55R16 | 24.9 in | 8.1 in | −9.6% | 54.2 mph |
| 205/60R16 | 25.7 in | 8.1 in | −6.7% | 56.0 mph |
| 215/60R16 | 26.2 in | 8.5 in | −4.9% | 57.0 mph |
| 215/65R16 compared | 27.0 in | 8.5 in | −1.9% | 58.9 mph |
| 225/60R16 compared | 26.6 in | 8.9 in | −3.2% | 58.1 mph |
| 225/75R16 | 29.3 in | 8.9 in | +6.4% | 63.9 mph |
| 235/70R16 | 29.0 in | 9.3 in | +5.2% | 63.1 mph |
| 235/85R16 | 31.7 in | 9.3 in | +15.3% | 69.2 mph |
| 245/70R16 | 29.5 in | 9.6 in | +7.2% | 64.3 mph |
| 245/75R16 | 30.5 in | 9.6 in | +10.7% | 66.4 mph |
| 265/70R16 | 30.6 in | 10.4 in | +11.2% | 66.7 mph |
| 265/75R16 | 31.6 in | 10.4 in | +15.0% | 69.0 mph |
| 285/75R16 | 32.8 in | 11.2 in | +19.3% | 71.6 mph |
| 315/75R16 | 34.6 in | 12.4 in | +25.8% | 75.5 mph |
225/65R16 compared
Every size: the tire size calculator. With the wheels off, the nuts go back on at your vehicle’s lug nut torque.
Questions
What is 225/65R16 in inches?
About 27.5x8.9R16: 27.5 inches tall and 8.9 inches wide on a 16-inch wheel, with 5.8-inch sidewalls. Exactly, 16 + 2 × 225 mm × 0.65 ÷ 25.4 = 27.52 inches.
How many revolutions per mile does a 225/65R16 make?
733 by its diameter: 63,360 inches in a mile ÷ 86.4 inches a turn. Tire makers’ published figures are measured under load, when the tire rolls on a slightly smaller radius, and run 2.8% to 3.3% higher in Toyo’s tables.
Is LT225/65R16 the same size as P225/65R16?
In dimensions, yes: the numbers mean the same in every metric size. The letters mark what the tire is built for, and an LT tire’s load is rated differently, so check the load index and pressure your vehicle needs before swapping one for the other.
Sources
- Bridgestone Americas: Determining tire size: P-metric, Euro-metric, LT-metric, C-type and flotation sizes, and what each number means (checked October 28, 2026)
- Toyo Tires: Extensa A/S II sizes and specifications: inflated overall diameter and width, revolutions per mile (checked October 28, 2026)
- Toyo Tires: Proxes Sport A/S sizes and specifications: inflated overall diameter and width, revolutions per mile (checked October 28, 2026)
- Toyo Tires: Open Country A/T III sizes and specifications: P-metric, LT-metric and flotation sizes, with revolutions per mile (checked October 28, 2026)
- Nitto Tire: Trail Grappler M/T sizes and specs: inflated overall diameter and width, LT-metric and flotation sizes (checked October 28, 2026)
Spotted a number that doesn’t match your manual or a source? Tell us; corrections are logged on the sources page.