Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 195/40-18 | 225/35-18 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 24.14 (613.2) | 24.2 (614.7) | 0.06 (1.5) 0.2% |
| Width inches (mm) | 7.68 (195) | 8.86 (225) | 1.18 (30) 15.4% |
| Circum. inches (mm) | 75.84 (1926.42) | 76.03 (1931.14) | 0.19 (4.71) 0.2% |
| Sidewall Height inches (mm) | 3.07 (78) | 3.1 (78.75) | 0.03 (0.75) 1% |
| Revolutions per mile (km) | 835.4 (519.1) | 833.37 (517.83) | -2.04 (-1.27) -0.2% |
225/35-18 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 20.05 mph (32.27 km/h) |
| 25 mph (40.23 km/h) | 25.06 mph (40.33 km/h) |
| 30 mph (48.28 km/h) | 30.07 mph (48.4 km/h) |
| 35 mph (56.33 km/h) | 35.09 mph (56.46 km/h) |
| 40 mph (64.37 km/h) | 40.1 mph (64.53 km/h) |
| 45 mph (72.42 km/h) | 45.11 mph (72.6 km/h) |
| 50 mph (80.47 km/h) | 50.12 mph (80.66 km/h) |
| 55 mph (88.51 km/h) | 55.13 mph (88.73 km/h) |
| 60 mph (96.56 km/h) | 60.15 mph (96.8 km/h) |
| 65 mph (104.61 km/h) | 65.16 mph (104.86 km/h) |
| 70 mph (112.65 km/h) | 70.17 mph (112.93 km/h) |
| 75 mph (120.7 km/h) | 75.18 mph (121 km/h) |
| 80 mph (128.75 km/h) | 80.2 mph (129.06 km/h) |
| 85 mph (136.79 km/h) | 85.21 mph (137.13 km/h) |
| 90 mph (144.84 km/h) | 90.22 mph (145.2 km/h) |
| 95 mph (152.89 km/h) | 95.23 mph (153.26 km/h) |
| 100 mph (160.93 km/h) | 100.24 mph (161.33 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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