Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 140/60-18 | 125/90-18 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 24.61 (625.2) | 26.86 (682.2) | 2.24 (57) 9.1% |
| Width inches (mm) | 5.51 (140) | 4.92 (125) | -0.59 (-15) -10.7% |
| Circum. inches (mm) | 77.33 (1964.12) | 84.38 (2143.19) | 7.05 (179.07) 9.1% |
| Sidewall Height inches (mm) | 3.31 (84) | 4.43 (112.5) | 1.12 (28.5) 33.9% |
| Revolutions per mile (km) | 819.37 (509.13) | 750.91 (466.59) | -68.46 (-42.54) -8.4% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 21.82 mph (35.12 km/h) |
| 25 mph (40.23 km/h) | 27.28 mph (43.9 km/h) |
| 30 mph (48.28 km/h) | 32.74 mph (52.68 km/h) |
| 35 mph (56.33 km/h) | 38.19 mph (61.46 km/h) |
| 40 mph (64.37 km/h) | 43.65 mph (70.24 km/h) |
| 45 mph (72.42 km/h) | 49.1 mph (79.02 km/h) |
| 50 mph (80.47 km/h) | 54.56 mph (87.8 km/h) |
| 55 mph (88.51 km/h) | 60.01 mph (96.58 km/h) |
| 60 mph (96.56 km/h) | 65.47 mph (105.36 km/h) |
| 65 mph (104.61 km/h) | 70.93 mph (114.14 km/h) |
| 70 mph (112.65 km/h) | 76.38 mph (122.93 km/h) |
| 75 mph (120.7 km/h) | 81.84 mph (131.71 km/h) |
| 80 mph (128.75 km/h) | 87.29 mph (140.49 km/h) |
| 85 mph (136.79 km/h) | 92.75 mph (149.27 km/h) |
| 90 mph (144.84 km/h) | 98.21 mph (158.05 km/h) |
| 95 mph (152.89 km/h) | 103.66 mph (166.83 km/h) |
| 100 mph (160.93 km/h) | 109.12 mph (175.61 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1911 | 2220 | 2391 | 2496 | 2610 | 2692 | 2781 | 2887 | 3033 | 3179 | 3342 | 3472 | 3708 | 3968 | 4171 | 4302 | 4375 | 4643 | 5017 | 5830 |
Better Fuel Economy Factory Ratios Increased Power
