Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 145/70-18 | 125/70-18 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 25.99 (660.2) | 24.89 (632.2) | -1.1 (-28) -4.2% |
| Width inches (mm) | 5.71 (145) | 4.92 (125) | -0.79 (-20) -13.8% |
| Circum. inches (mm) | 81.66 (2074.08) | 78.19 (1986.11) | -3.46 (-87.96) -4.2% |
| Sidewall Height inches (mm) | 4 (101.5) | 3.44 (87.5) | -0.55 (-14) -13.8% |
| Revolutions per mile (km) | 775.93 (482.14) | 810.3 (503.49) | 34.37 (21.35) 4.4% |
125/70-18 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 19.15 mph (30.82 km/h) |
| 25 mph (40.23 km/h) | 23.94 mph (38.53 km/h) |
| 30 mph (48.28 km/h) | 28.73 mph (46.23 km/h) |
| 35 mph (56.33 km/h) | 33.52 mph (53.94 km/h) |
| 40 mph (64.37 km/h) | 38.3 mph (61.64 km/h) |
| 45 mph (72.42 km/h) | 43.09 mph (69.35 km/h) |
| 50 mph (80.47 km/h) | 47.88 mph (77.05 km/h) |
| 55 mph (88.51 km/h) | 52.67 mph (84.76 km/h) |
| 60 mph (96.56 km/h) | 57.46 mph (92.47 km/h) |
| 65 mph (104.61 km/h) | 62.24 mph (100.17 km/h) |
| 70 mph (112.65 km/h) | 67.03 mph (107.88 km/h) |
| 75 mph (120.7 km/h) | 71.82 mph (115.58 km/h) |
| 80 mph (128.75 km/h) | 76.61 mph (123.29 km/h) |
| 85 mph (136.79 km/h) | 81.4 mph (130.99 km/h) |
| 90 mph (144.84 km/h) | 86.18 mph (138.7 km/h) |
| 95 mph (152.89 km/h) | 90.97 mph (146.4 km/h) |
| 100 mph (160.93 km/h) | 95.76 mph (154.11 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2062 | 2395 | 2580 | 2694 | 2817 | 2904 | 3001 | 3115 | 3273 | 3431 | 3606 | 3747 | 4001 | 4282 | 4501 | 4642 | 4721 | 5010 | 5414 | 6291 |
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