Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 145/60-20 | 225/55-17 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 26.85 (682) | 26.74 (679.3) | -0.11 (-2.7) -0.4% |
| Width inches (mm) | 5.71 (145) | 8.86 (225) | 3.15 (80) 55.2% |
| Circum. inches (mm) | 84.35 (2142.57) | 84.02 (2134.08) | -0.33 (-8.48) -0.4% |
| Sidewall Height inches (mm) | 3.43 (87) | 4.87 (123.75) | 1.45 (36.75) 42.2% |
| Revolutions per mile (km) | 751.13 (466.73) | 754.11 (468.58) | 2.99 (1.86) 0.4% |
225/55-17 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 19.92 mph (32.06 km/h) |
| 25 mph (40.23 km/h) | 24.9 mph (40.07 km/h) |
| 30 mph (48.28 km/h) | 29.88 mph (48.09 km/h) |
| 35 mph (56.33 km/h) | 34.86 mph (56.1 km/h) |
| 40 mph (64.37 km/h) | 39.84 mph (64.12 km/h) |
| 45 mph (72.42 km/h) | 44.82 mph (72.13 km/h) |
| 50 mph (80.47 km/h) | 49.8 mph (80.15 km/h) |
| 55 mph (88.51 km/h) | 54.78 mph (88.16 km/h) |
| 60 mph (96.56 km/h) | 59.76 mph (96.18 km/h) |
| 65 mph (104.61 km/h) | 64.74 mph (104.19 km/h) |
| 70 mph (112.65 km/h) | 69.72 mph (112.21 km/h) |
| 75 mph (120.7 km/h) | 74.7 mph (120.22 km/h) |
| 80 mph (128.75 km/h) | 79.68 mph (128.24 km/h) |
| 85 mph (136.79 km/h) | 84.66 mph (136.25 km/h) |
| 90 mph (144.84 km/h) | 89.64 mph (144.27 km/h) |
| 95 mph (152.89 km/h) | 94.62 mph (152.28 km/h) |
| 100 mph (160.93 km/h) | 99.6 mph (160.3 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1919 | 2229 | 2401 | 2507 | 2621 | 2703 | 2793 | 2899 | 3046 | 3193 | 3356 | 3487 | 3724 | 3985 | 4189 | 4320 | 4393 | 4663 | 5039 | 5855 |
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