Home › 15" tire sizes › 225/75R15
225/75R15 tire size in inches
225/75R15 is 28.29" tall and 8.86" wide, and fits a 15" rim. In flotation (inch) sizing that is roughly 28.3x8.9R15.
225/75R15 dimensions
| Measurement | Inches | Metric |
|---|---|---|
| Overall diameter (height) | 28.29" | 719 mm |
| Section width | 8.86" | 225 mm |
| Sidewall height | 6.64" | 168.8 mm |
| Rim diameter | 15" | 381.0 mm |
| Circumference | 88.9" | 2257 mm |
| Revolutions per mile | 713 | |
| Aspect ratio | 75% (sidewall is 75% of the width) | |
Drawn to scale
Among the 86 sizes for 15" wheels on this site, 225/75R15 is #50 by height (shortest: 195/50R15, tallest: 325/75R15).
What people compare 225/75R15 with
Real comparisons drivers search for, worked out against 225/75R15:
| Compared size | Height | Width | Sidewall | Speedo at true 60 |
|---|---|---|---|---|
| 205/75R15 | -1.18" (-4.17%) | -0.79" | -0.59" | 62.6 mph |
| 235/75R15 | +0.59" (+2.09%) | +0.39" | +0.30" | 58.8 mph |
| 215/75R15 | -0.59" (-2.09%) | -0.40" | -0.29" | 61.3 mph |
| 225/70R15 | -0.89" (-3.15%) | 0.00" | -0.44" | 61.9 mph |
| 205/90R15 | +1.24" (+4.38%) | -0.79" | +0.62" | 57.5 mph |
| 235/80R16 | +2.51" (+8.87%) | +0.39" | +0.76" | 55.1 mph |
How the 225/75R15 numbers are worked out
The size code reads as 225 mm section width, 75% aspect ratio, R for radial construction and 15-inch wheel.
- Sidewall = 225 × 75% = 168.8 mm = 6.64"
- Diameter = 15" + 2 × 6.64" = 28.29"
- Circumference = π × 28.29" = 88.9"
- Revs per mile = 63,360" ÷ 88.9" = 713
Sizes that can replace 225/75R15 on a 15" wheel
Within 3% of 28.29". Last column: speedometer reading at a true 60 mph.
| Size | Diameter | Width | Difference | Speedo at true 60 mph |
|---|---|---|---|---|
| 285/60R15 | 28.46" | 11.22" | +0.6% | 59.6 mph |
| 245/70R15 | 28.50" | 9.65" | +0.74% | 59.6 mph |
| 255/65R15 | 28.05" | 10.04" | -0.85% | 60.5 mph |
| 215/80R15 | 28.54" | 8.46" | +0.88% | 59.5 mph |
| 265/65R15 | 28.56" | 10.43" | +0.95% | 59.4 mph |
| 275/60R15 | 27.99" | 10.83" | -1.06% | 60.6 mph |
| 235/70R15 | 27.95" | 9.25" | -1.2% | 60.7 mph |
| 325/50R15 | 27.80" | 12.80" | -1.73% | 61.1 mph |
| 295/55R15 | 27.78" | 11.61" | -1.8% | 61.1 mph |
| 235/75R15 | 28.88" | 9.25" | +2.09% | 58.8 mph |
| 215/75R15 | 27.70" | 8.46" | -2.09% | 61.3 mph |
| 295/60R15 | 28.94" | 11.61" | +2.3% | 58.7 mph |
One size wider or narrower
Same height on a different wheel size
- 235/75R14 14" (-1.45%)
- 285/55R16 16" (+0.18%)
- 225/70R16 16" (+0.39%)
- 205/75R16 16" (-0.64%)
- 265/60R16 16" (+0.81%)
- 255/60R16 16" (-0.85%)
- 245/65R16 16" (+0.88%)
- 235/65R16 16" (-0.92%)
- 275/55R16 16" (-1.34%)
- 215/75R16 16" (+1.45%)
Questions about 225/75R15
How tall is a 225/75R15 tire in inches?
A 225/75R15 tire is 28.29 inches (719 mm) tall: the 15-inch rim plus two sidewalls of 6.64 inches each.
Is 225/75R15 a 28 inch tire?
Yes. At 28.29 inches tall it is commonly called a 28-inch tire.
How many revolutions per mile does a 225/75R15 make?
About 713 revolutions per mile, based on a calculated circumference of 88.9 inches.
What size can replace 225/75R15?
285/60R15 is the closest match on a 15" rim (+0.6% height). Check load index, speed rating and clearance first.
Compare 225/75R15 against any other size with the tire size calculator.