Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 185/75-15 | 225/75-15 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 25.93 (658.5) | 28.29 (718.5) | 2.36 (60) 9.1% |
| Width inches (mm) | 7.28 (185) | 8.86 (225) | 1.57 (40) 21.6% |
| Circum. inches (mm) | 81.45 (2068.74) | 88.87 (2257.23) | 7.42 (188.5) 9.1% |
| Sidewall Height inches (mm) | 5.46 (138.75) | 6.64 (168.75) | 1.18 (30) 21.6% |
| Revolutions per mile (km) | 777.93 (483.39) | 712.97 (443.02) | -64.96 (-40.37) -8.4% |
225/75-15 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 21.82 mph (35.12 km/h) |
| 25 mph (40.23 km/h) | 27.28 mph (43.9 km/h) |
| 30 mph (48.28 km/h) | 32.73 mph (52.68 km/h) |
| 35 mph (56.33 km/h) | 38.19 mph (61.46 km/h) |
| 40 mph (64.37 km/h) | 43.64 mph (70.24 km/h) |
| 45 mph (72.42 km/h) | 49.1 mph (79.02 km/h) |
| 50 mph (80.47 km/h) | 54.56 mph (87.8 km/h) |
| 55 mph (88.51 km/h) | 60.01 mph (96.58 km/h) |
| 60 mph (96.56 km/h) | 65.47 mph (105.36 km/h) |
| 65 mph (104.61 km/h) | 70.92 mph (114.14 km/h) |
| 70 mph (112.65 km/h) | 76.38 mph (122.92 km/h) |
| 75 mph (120.7 km/h) | 81.83 mph (131.7 km/h) |
| 80 mph (128.75 km/h) | 87.29 mph (140.48 km/h) |
| 85 mph (136.79 km/h) | 92.74 mph (149.26 km/h) |
| 90 mph (144.84 km/h) | 98.2 mph (158.04 km/h) |
| 95 mph (152.89 km/h) | 103.66 mph (166.82 km/h) |
| 100 mph (160.93 km/h) | 109.11 mph (175.6 km/h) |
| 2.35 | 2.73 | 2.94 | 3.07 | 3.21 | 3.31 | 3.42 | 3.55 | 3.73 | 3.91 | 4.11 | 4.27 | 4.56 | 4.88 | 5.13 | 5.29 | 5.38 | 5.71 | 6.17 | 7.17 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1814 | 2108 | 2270 | 2370 | 2478 | 2556 | 2640 | 2741 | 2880 | 3019 | 3173 | 3297 | 3521 | 3768 | 3961 | 4084 | 4154 | 4409 | 4764 | 5536 |
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