Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 195/60-15 | 125/70-18 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 24.21 (615) | 24.89 (632.2) | 0.68 (17.2) 2.8% |
| Width inches (mm) | 7.68 (195) | 4.92 (125) | -2.76 (-70) -35.9% |
| Circum. inches (mm) | 76.07 (1932.08) | 78.19 (1986.11) | 2.13 (54.04) 2.8% |
| Sidewall Height inches (mm) | 4.61 (117) | 3.44 (87.5) | -1.16 (-29.5) -25.2% |
| Revolutions per mile (km) | 832.96 (517.58) | 810.3 (503.49) | -22.66 (-14.08) -2.7% |
125/70-18 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 20.56 mph (33.09 km/h) |
| 25 mph (40.23 km/h) | 25.7 mph (41.36 km/h) |
| 30 mph (48.28 km/h) | 30.84 mph (49.63 km/h) |
| 35 mph (56.33 km/h) | 35.98 mph (57.9 km/h) |
| 40 mph (64.37 km/h) | 41.12 mph (66.17 km/h) |
| 45 mph (72.42 km/h) | 46.26 mph (74.45 km/h) |
| 50 mph (80.47 km/h) | 51.4 mph (82.72 km/h) |
| 55 mph (88.51 km/h) | 56.54 mph (90.99 km/h) |
| 60 mph (96.56 km/h) | 61.68 mph (99.26 km/h) |
| 65 mph (104.61 km/h) | 66.82 mph (107.53 km/h) |
| 70 mph (112.65 km/h) | 71.96 mph (115.8 km/h) |
| 75 mph (120.7 km/h) | 77.1 mph (124.08 km/h) |
| 80 mph (128.75 km/h) | 82.24 mph (132.35 km/h) |
| 85 mph (136.79 km/h) | 87.38 mph (140.62 km/h) |
| 90 mph (144.84 km/h) | 92.52 mph (148.89 km/h) |
| 95 mph (152.89 km/h) | 97.66 mph (157.16 km/h) |
| 100 mph (160.93 km/h) | 102.8 mph (165.44 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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