Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 225/50-16 | 225/50-18 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 24.86 (631.4) | 26.86 (682.2) | 2 (50.8) 8% |
| Width inches (mm) | 8.86 (225) | 8.86 (225) | 0 (0) 0% |
| Circum. inches (mm) | 78.09 (1983.6) | 84.38 (2143.19) | 6.28 (159.59) 8% |
| Sidewall Height inches (mm) | 4.43 (112.5) | 4.43 (112.5) | 0 (0) 0% |
| Revolutions per mile (km) | 811.32 (504.13) | 750.91 (466.59) | -60.42 (-37.54) -7.4% |
225/50-18 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 21.61 mph (34.78 km/h) |
| 25 mph (40.23 km/h) | 27.01 mph (43.47 km/h) |
| 30 mph (48.28 km/h) | 32.41 mph (52.16 km/h) |
| 35 mph (56.33 km/h) | 37.82 mph (60.86 km/h) |
| 40 mph (64.37 km/h) | 43.22 mph (69.55 km/h) |
| 45 mph (72.42 km/h) | 48.62 mph (78.25 km/h) |
| 50 mph (80.47 km/h) | 54.02 mph (86.94 km/h) |
| 55 mph (88.51 km/h) | 59.43 mph (95.64 km/h) |
| 60 mph (96.56 km/h) | 64.83 mph (104.33 km/h) |
| 65 mph (104.61 km/h) | 70.23 mph (113.02 km/h) |
| 70 mph (112.65 km/h) | 75.63 mph (121.72 km/h) |
| 75 mph (120.7 km/h) | 81.03 mph (130.41 km/h) |
| 80 mph (128.75 km/h) | 86.44 mph (139.11 km/h) |
| 85 mph (136.79 km/h) | 91.84 mph (147.8 km/h) |
| 90 mph (144.84 km/h) | 97.24 mph (156.49 km/h) |
| 95 mph (152.89 km/h) | 102.64 mph (165.19 km/h) |
| 100 mph (160.93 km/h) | 108.05 mph (173.88 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1911 | 2220 | 2391 | 2496 | 2610 | 2692 | 2781 | 2887 | 3033 | 3179 | 3342 | 3472 | 3708 | 3968 | 4171 | 4302 | 4375 | 4643 | 5017 | 5830 |
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