Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 125/70-16 | 125/70-18 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 22.89 (581.4) | 24.89 (632.2) | 2 (50.8) 8.7% |
| Width inches (mm) | 4.92 (125) | 4.92 (125) | 0 (0) 0% |
| Circum. inches (mm) | 71.91 (1826.52) | 78.19 (1986.11) | 6.28 (159.59) 8.7% |
| Sidewall Height inches (mm) | 3.44 (87.5) | 3.44 (87.5) | 0 (0) 0% |
| Revolutions per mile (km) | 881.1 (547.49) | 810.3 (503.49) | -70.8 (-43.99) -8% |
125/70-18 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 21.75 mph (35 km/h) |
| 25 mph (40.23 km/h) | 27.18 mph (43.75 km/h) |
| 30 mph (48.28 km/h) | 32.62 mph (52.5 km/h) |
| 35 mph (56.33 km/h) | 38.06 mph (61.25 km/h) |
| 40 mph (64.37 km/h) | 43.5 mph (70 km/h) |
| 45 mph (72.42 km/h) | 48.93 mph (78.75 km/h) |
| 50 mph (80.47 km/h) | 54.37 mph (87.5 km/h) |
| 55 mph (88.51 km/h) | 59.81 mph (96.25 km/h) |
| 60 mph (96.56 km/h) | 65.24 mph (105 km/h) |
| 65 mph (104.61 km/h) | 70.68 mph (113.75 km/h) |
| 70 mph (112.65 km/h) | 76.12 mph (122.5 km/h) |
| 75 mph (120.7 km/h) | 81.55 mph (131.25 km/h) |
| 80 mph (128.75 km/h) | 86.99 mph (140 km/h) |
| 85 mph (136.79 km/h) | 92.43 mph (148.75 km/h) |
| 90 mph (144.84 km/h) | 97.86 mph (157.5 km/h) |
| 95 mph (152.89 km/h) | 103.3 mph (166.25 km/h) |
| 100 mph (160.93 km/h) | 108.74 mph (175 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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