Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 235/40-18 | 225/50-17 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 25.4 (645.2) | 25.86 (656.8) | 0.46 (11.6) 1.8% |
| Width inches (mm) | 9.25 (235) | 8.86 (225) | -0.39 (-10) -4.3% |
| Circum. inches (mm) | 79.8 (2026.96) | 81.24 (2063.4) | 1.43 (36.44) 1.8% |
| Sidewall Height inches (mm) | 3.7 (94) | 4.43 (112.5) | 0.73 (18.5) 19.7% |
| Revolutions per mile (km) | 793.97 (493.35) | 779.95 (484.64) | -14.02 (-8.71) -1.8% |
225/50-17 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 20.36 mph (32.77 km/h) |
| 25 mph (40.23 km/h) | 25.45 mph (40.96 km/h) |
| 30 mph (48.28 km/h) | 30.54 mph (49.15 km/h) |
| 35 mph (56.33 km/h) | 35.63 mph (57.34 km/h) |
| 40 mph (64.37 km/h) | 40.72 mph (65.53 km/h) |
| 45 mph (72.42 km/h) | 45.81 mph (73.72 km/h) |
| 50 mph (80.47 km/h) | 50.9 mph (81.91 km/h) |
| 55 mph (88.51 km/h) | 55.99 mph (90.11 km/h) |
| 60 mph (96.56 km/h) | 61.08 mph (98.3 km/h) |
| 65 mph (104.61 km/h) | 66.17 mph (106.49 km/h) |
| 70 mph (112.65 km/h) | 71.26 mph (114.68 km/h) |
| 75 mph (120.7 km/h) | 76.35 mph (122.87 km/h) |
| 80 mph (128.75 km/h) | 81.44 mph (131.06 km/h) |
| 85 mph (136.79 km/h) | 86.53 mph (139.25 km/h) |
| 90 mph (144.84 km/h) | 91.62 mph (147.45 km/h) |
| 95 mph (152.89 km/h) | 96.71 mph (155.64 km/h) |
| 100 mph (160.93 km/h) | 101.8 mph (163.83 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1985 | 2306 | 2483 | 2593 | 2711 | 2796 | 2889 | 2998 | 3150 | 3302 | 3471 | 3606 | 3851 | 4122 | 4333 | 4468 | 4544 | 4823 | 5211 | 6056 |
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