Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 175/90-18 | 225/55-17 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 30.4 (772.2) | 26.74 (679.3) | -3.66 (-92.9) -12% |
| Width inches (mm) | 6.89 (175) | 8.86 (225) | 1.97 (50) 28.6% |
| Circum. inches (mm) | 95.51 (2425.94) | 84.02 (2134.08) | -11.49 (-291.85) -12% |
| Sidewall Height inches (mm) | 6.2 (157.5) | 4.87 (123.75) | -1.33 (-33.75) -21.4% |
| Revolutions per mile (km) | 663.39 (412.21) | 754.11 (468.58) | 90.72 (56.37) 13.7% |
225/55-17 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 17.59 mph (28.31 km/h) |
| 25 mph (40.23 km/h) | 21.99 mph (35.39 km/h) |
| 30 mph (48.28 km/h) | 26.39 mph (42.47 km/h) |
| 35 mph (56.33 km/h) | 30.79 mph (49.55 km/h) |
| 40 mph (64.37 km/h) | 35.19 mph (56.63 km/h) |
| 45 mph (72.42 km/h) | 39.59 mph (63.71 km/h) |
| 50 mph (80.47 km/h) | 43.98 mph (70.79 km/h) |
| 55 mph (88.51 km/h) | 48.38 mph (77.87 km/h) |
| 60 mph (96.56 km/h) | 52.78 mph (84.94 km/h) |
| 65 mph (104.61 km/h) | 57.18 mph (92.02 km/h) |
| 70 mph (112.65 km/h) | 61.58 mph (99.1 km/h) |
| 75 mph (120.7 km/h) | 65.98 mph (106.18 km/h) |
| 80 mph (128.75 km/h) | 70.38 mph (113.26 km/h) |
| 85 mph (136.79 km/h) | 74.77 mph (120.34 km/h) |
| 90 mph (144.84 km/h) | 79.17 mph (127.42 km/h) |
| 95 mph (152.89 km/h) | 83.57 mph (134.49 km/h) |
| 100 mph (160.93 km/h) | 87.97 mph (141.57 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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