Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 135/70-18 | 125/70-18 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 25.44 (646.2) | 24.89 (632.2) | -0.55 (-14) -2.2% |
| Width inches (mm) | 5.31 (135) | 4.92 (125) | -0.39 (-10) -7.4% |
| Circum. inches (mm) | 79.93 (2030.1) | 78.19 (1986.11) | -1.73 (-43.98) -2.2% |
| Sidewall Height inches (mm) | 3.72 (94.5) | 3.44 (87.5) | -0.28 (-7) -7.4% |
| Revolutions per mile (km) | 792.74 (492.59) | 810.3 (503.49) | 17.56 (10.91) 2.2% |
125/70-18 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 19.57 mph (31.49 km/h) |
| 25 mph (40.23 km/h) | 24.46 mph (39.36 km/h) |
| 30 mph (48.28 km/h) | 29.35 mph (47.23 km/h) |
| 35 mph (56.33 km/h) | 34.24 mph (55.11 km/h) |
| 40 mph (64.37 km/h) | 39.13 mph (62.98 km/h) |
| 45 mph (72.42 km/h) | 44.03 mph (70.85 km/h) |
| 50 mph (80.47 km/h) | 48.92 mph (78.72 km/h) |
| 55 mph (88.51 km/h) | 53.81 mph (86.6 km/h) |
| 60 mph (96.56 km/h) | 58.7 mph (94.47 km/h) |
| 65 mph (104.61 km/h) | 63.59 mph (102.34 km/h) |
| 70 mph (112.65 km/h) | 68.48 mph (110.21 km/h) |
| 75 mph (120.7 km/h) | 73.38 mph (118.09 km/h) |
| 80 mph (128.75 km/h) | 78.27 mph (125.96 km/h) |
| 85 mph (136.79 km/h) | 83.16 mph (133.83 km/h) |
| 90 mph (144.84 km/h) | 88.05 mph (141.7 km/h) |
| 95 mph (152.89 km/h) | 92.94 mph (149.58 km/h) |
| 100 mph (160.93 km/h) | 97.83 mph (157.45 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 |
Better Fuel Economy Factory Ratios Increased Power
