Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 130/80-18 | 140/70-18 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 26.19 (665.2) | 25.72 (653.2) | -0.47 (-12) -1.8% |
| Width inches (mm) | 5.12 (130) | 5.51 (140) | 0.39 (10) 7.7% |
| Circum. inches (mm) | 82.28 (2089.79) | 80.79 (2052.09) | -1.48 (-37.7) -1.8% |
| Sidewall Height inches (mm) | 4.09 (104) | 3.86 (98) | -0.24 (-6) -5.8% |
| Revolutions per mile (km) | 770.1 (478.52) | 784.25 (487.31) | 14.15 (8.79) 1.8% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 19.64 mph (31.61 km/h) |
| 25 mph (40.23 km/h) | 24.55 mph (39.51 km/h) |
| 30 mph (48.28 km/h) | 29.46 mph (47.41 km/h) |
| 35 mph (56.33 km/h) | 34.37 mph (55.31 km/h) |
| 40 mph (64.37 km/h) | 39.28 mph (63.21 km/h) |
| 45 mph (72.42 km/h) | 44.19 mph (71.11 km/h) |
| 50 mph (80.47 km/h) | 49.1 mph (79.02 km/h) |
| 55 mph (88.51 km/h) | 54.01 mph (86.92 km/h) |
| 60 mph (96.56 km/h) | 58.92 mph (94.82 km/h) |
| 65 mph (104.61 km/h) | 63.83 mph (102.72 km/h) |
| 70 mph (112.65 km/h) | 68.74 mph (110.62 km/h) |
| 75 mph (120.7 km/h) | 73.65 mph (118.52 km/h) |
| 80 mph (128.75 km/h) | 78.56 mph (126.43 km/h) |
| 85 mph (136.79 km/h) | 83.47 mph (134.33 km/h) |
| 90 mph (144.84 km/h) | 88.38 mph (142.23 km/h) |
| 95 mph (152.89 km/h) | 93.29 mph (150.13 km/h) |
| 100 mph (160.93 km/h) | 98.2 mph (158.03 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1996 | 2318 | 2497 | 2607 | 2726 | 2811 | 2904 | 3015 | 3168 | 3321 | 3490 | 3626 | 3873 | 4144 | 4357 | 4493 | 4569 | 4849 | 5240 | 6089 |
Better Fuel Economy Factory Ratios Increased Power
