Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 130/70-16 | 180/60-18 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 23.17 (588.4) | 26.5 (673.2) | 3.34 (84.8) 14.4% |
| Width inches (mm) | 5.12 (130) | 7.09 (180) | 1.97 (50) 38.5% |
| Circum. inches (mm) | 72.78 (1848.51) | 83.26 (2114.92) | 10.49 (266.41) 14.4% |
| Sidewall Height inches (mm) | 3.58 (91) | 4.25 (108) | 0.67 (17) 18.7% |
| Revolutions per mile (km) | 870.62 (540.97) | 760.95 (472.83) | -109.67 (-68.14) -12.6% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 22.88 mph (36.83 km/h) |
| 25 mph (40.23 km/h) | 28.6 mph (46.03 km/h) |
| 30 mph (48.28 km/h) | 34.32 mph (55.24 km/h) |
| 35 mph (56.33 km/h) | 40.04 mph (64.44 km/h) |
| 40 mph (64.37 km/h) | 45.76 mph (73.65 km/h) |
| 45 mph (72.42 km/h) | 51.49 mph (82.86 km/h) |
| 50 mph (80.47 km/h) | 57.21 mph (92.06 km/h) |
| 55 mph (88.51 km/h) | 62.93 mph (101.27 km/h) |
| 60 mph (96.56 km/h) | 68.65 mph (110.48 km/h) |
| 65 mph (104.61 km/h) | 74.37 mph (119.68 km/h) |
| 70 mph (112.65 km/h) | 80.09 mph (128.89 km/h) |
| 75 mph (120.7 km/h) | 85.81 mph (138.1 km/h) |
| 80 mph (128.75 km/h) | 91.53 mph (147.3 km/h) |
| 85 mph (136.79 km/h) | 97.25 mph (156.51 km/h) |
| 90 mph (144.84 km/h) | 102.97 mph (165.72 km/h) |
| 95 mph (152.89 km/h) | 108.69 mph (174.92 km/h) |
| 100 mph (160.93 km/h) | 114.41 mph (184.13 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1936 | 2250 | 2423 | 2530 | 2645 | 2728 | 2818 | 2925 | 3074 | 3222 | 3387 | 3519 | 3758 | 4021 | 4227 | 4359 | 4433 | 4705 | 5084 | 5908 |
Better Fuel Economy Factory Ratios Increased Power
