Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 125/70-18 | 125/75-18 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 24.89 (632.2) | 25.38 (644.7) | 0.49 (12.5) 2% |
| Width inches (mm) | 4.92 (125) | 4.92 (125) | 0 (0) 0% |
| Circum. inches (mm) | 78.19 (1986.11) | 79.74 (2025.38) | 1.55 (39.27) 2% |
| Sidewall Height inches (mm) | 3.44 (87.5) | 3.69 (93.75) | 0.25 (6.25) 7.1% |
| Revolutions per mile (km) | 810.3 (503.49) | 794.59 (493.73) | -15.71 (-9.76) -1.9% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 20.4 mph (32.82 km/h) |
| 25 mph (40.23 km/h) | 25.49 mph (41.03 km/h) |
| 30 mph (48.28 km/h) | 30.59 mph (49.24 km/h) |
| 35 mph (56.33 km/h) | 35.69 mph (57.44 km/h) |
| 40 mph (64.37 km/h) | 40.79 mph (65.65 km/h) |
| 45 mph (72.42 km/h) | 45.89 mph (73.85 km/h) |
| 50 mph (80.47 km/h) | 50.99 mph (82.06 km/h) |
| 55 mph (88.51 km/h) | 56.09 mph (90.26 km/h) |
| 60 mph (96.56 km/h) | 61.19 mph (98.47 km/h) |
| 65 mph (104.61 km/h) | 66.29 mph (106.68 km/h) |
| 70 mph (112.65 km/h) | 71.38 mph (114.88 km/h) |
| 75 mph (120.7 km/h) | 76.48 mph (123.09 km/h) |
| 80 mph (128.75 km/h) | 81.58 mph (131.29 km/h) |
| 85 mph (136.79 km/h) | 86.68 mph (139.5 km/h) |
| 90 mph (144.84 km/h) | 91.78 mph (147.71 km/h) |
| 95 mph (152.89 km/h) | 96.88 mph (155.91 km/h) |
| 100 mph (160.93 km/h) | 101.98 mph (164.12 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2022 | 2349 | 2530 | 2642 | 2762 | 2848 | 2943 | 3055 | 3210 | 3364 | 3536 | 3674 | 3924 | 4199 | 4414 | 4552 | 4629 | 4913 | 5309 | 6169 |
Better Fuel Economy Factory Ratios Increased Power
