Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 235/50-18 | 225/55-17 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 27.25 (692.2) | 26.74 (679.3) | -0.51 (-12.9) -1.9% |
| Width inches (mm) | 9.25 (235) | 8.86 (225) | -0.39 (-10) -4.3% |
| Circum. inches (mm) | 85.61 (2174.61) | 84.02 (2134.08) | -1.6 (-40.53) -1.9% |
| Sidewall Height inches (mm) | 4.63 (117.5) | 4.87 (123.75) | 0.25 (6.25) 5.3% |
| Revolutions per mile (km) | 740.06 (459.85) | 754.11 (468.58) | 14.05 (8.73) 1.9% |
225/55-17 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 19.63 mph (31.59 km/h) |
| 25 mph (40.23 km/h) | 24.53 mph (39.48 km/h) |
| 30 mph (48.28 km/h) | 29.44 mph (47.38 km/h) |
| 35 mph (56.33 km/h) | 34.35 mph (55.28 km/h) |
| 40 mph (64.37 km/h) | 39.25 mph (63.17 km/h) |
| 45 mph (72.42 km/h) | 44.16 mph (71.07 km/h) |
| 50 mph (80.47 km/h) | 49.07 mph (78.97 km/h) |
| 55 mph (88.51 km/h) | 53.98 mph (86.86 km/h) |
| 60 mph (96.56 km/h) | 58.88 mph (94.76 km/h) |
| 65 mph (104.61 km/h) | 63.79 mph (102.66 km/h) |
| 70 mph (112.65 km/h) | 68.7 mph (110.55 km/h) |
| 75 mph (120.7 km/h) | 73.6 mph (118.45 km/h) |
| 80 mph (128.75 km/h) | 78.51 mph (126.35 km/h) |
| 85 mph (136.79 km/h) | 83.42 mph (134.25 km/h) |
| 90 mph (144.84 km/h) | 88.32 mph (142.14 km/h) |
| 95 mph (152.89 km/h) | 93.23 mph (150.04 km/h) |
| 100 mph (160.93 km/h) | 98.14 mph (157.94 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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