Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 130/80-18 | 120/100-18 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 26.19 (665.2) | 27.45 (697.2) | 1.26 (32) 4.8% |
| Width inches (mm) | 5.12 (130) | 4.72 (120) | -0.39 (-10) -7.7% |
| Circum. inches (mm) | 82.28 (2089.79) | 86.23 (2190.32) | 3.96 (100.53) 4.8% |
| Sidewall Height inches (mm) | 4.09 (104) | 4.72 (120) | 0.63 (16) 15.4% |
| Revolutions per mile (km) | 770.1 (478.52) | 734.75 (456.55) | -35.35 (-21.96) -4.6% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 20.96 mph (33.74 km/h) |
| 25 mph (40.23 km/h) | 26.2 mph (42.17 km/h) |
| 30 mph (48.28 km/h) | 31.44 mph (50.6 km/h) |
| 35 mph (56.33 km/h) | 36.68 mph (59.04 km/h) |
| 40 mph (64.37 km/h) | 41.92 mph (67.47 km/h) |
| 45 mph (72.42 km/h) | 47.16 mph (75.9 km/h) |
| 50 mph (80.47 km/h) | 52.41 mph (84.34 km/h) |
| 55 mph (88.51 km/h) | 57.65 mph (92.77 km/h) |
| 60 mph (96.56 km/h) | 62.89 mph (101.21 km/h) |
| 65 mph (104.61 km/h) | 68.13 mph (109.64 km/h) |
| 70 mph (112.65 km/h) | 73.37 mph (118.07 km/h) |
| 75 mph (120.7 km/h) | 78.61 mph (126.51 km/h) |
| 80 mph (128.75 km/h) | 83.85 mph (134.94 km/h) |
| 85 mph (136.79 km/h) | 89.09 mph (143.38 km/h) |
| 90 mph (144.84 km/h) | 94.33 mph (151.81 km/h) |
| 95 mph (152.89 km/h) | 99.57 mph (160.24 km/h) |
| 100 mph (160.93 km/h) | 104.81 mph (168.68 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1870 | 2172 | 2339 | 2443 | 2554 | 2634 | 2721 | 2825 | 2968 | 3111 | 3270 | 3397 | 3628 | 3883 | 4082 | 4209 | 4281 | 4543 | 4909 | 5705 |
Better Fuel Economy Factory Ratios Increased Power
