Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 225/40-18 | 225/35-18 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 25.09 (637.2) | 24.2 (614.7) | -0.89 (-22.5) -3.5% |
| Width inches (mm) | 8.86 (225) | 8.86 (225) | 0 (0) 0% |
| Circum. inches (mm) | 78.81 (2001.82) | 76.03 (1931.14) | -2.78 (-70.69) -3.5% |
| Sidewall Height inches (mm) | 3.54 (90) | 3.1 (78.75) | -0.44 (-11.25) -12.5% |
| Revolutions per mile (km) | 803.94 (499.54) | 833.37 (517.83) | 29.43 (18.28) 3.7% |
225/35-18 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 19.29 mph (31.05 km/h) |
| 25 mph (40.23 km/h) | 24.12 mph (38.81 km/h) |
| 30 mph (48.28 km/h) | 28.94 mph (46.58 km/h) |
| 35 mph (56.33 km/h) | 33.76 mph (54.34 km/h) |
| 40 mph (64.37 km/h) | 38.59 mph (62.1 km/h) |
| 45 mph (72.42 km/h) | 43.41 mph (69.86 km/h) |
| 50 mph (80.47 km/h) | 48.23 mph (77.63 km/h) |
| 55 mph (88.51 km/h) | 53.06 mph (85.39 km/h) |
| 60 mph (96.56 km/h) | 57.88 mph (93.15 km/h) |
| 65 mph (104.61 km/h) | 62.7 mph (100.91 km/h) |
| 70 mph (112.65 km/h) | 67.53 mph (108.68 km/h) |
| 75 mph (120.7 km/h) | 72.35 mph (116.44 km/h) |
| 80 mph (128.75 km/h) | 77.18 mph (124.2 km/h) |
| 85 mph (136.79 km/h) | 82 mph (131.96 km/h) |
| 90 mph (144.84 km/h) | 86.82 mph (139.73 km/h) |
| 95 mph (152.89 km/h) | 91.65 mph (147.49 km/h) |
| 100 mph (160.93 km/h) | 96.47 mph (155.25 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2121 | 2464 | 2653 | 2771 | 2897 | 2987 | 3086 | 3204 | 3366 | 3529 | 3709 | 3853 | 4115 | 4404 | 4630 | 4774 | 4855 | 5153 | 5568 | 6471 |
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