Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 180/80-14 | 130/90-18 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 25.34 (643.6) | 27.21 (691.2) | 1.87 (47.6) 7.4% |
| Width inches (mm) | 7.09 (180) | 5.12 (130) | -1.97 (-50) -27.8% |
| Circum. inches (mm) | 79.6 (2021.93) | 85.49 (2171.47) | 5.89 (149.54) 7.4% |
| Sidewall Height inches (mm) | 5.67 (144) | 4.61 (117) | -1.06 (-27) -18.8% |
| Revolutions per mile (km) | 795.94 (494.58) | 741.13 (460.52) | -54.81 (-34.06) -6.9% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 21.48 mph (34.57 km/h) |
| 25 mph (40.23 km/h) | 26.85 mph (43.21 km/h) |
| 30 mph (48.28 km/h) | 32.22 mph (51.85 km/h) |
| 35 mph (56.33 km/h) | 37.59 mph (60.49 km/h) |
| 40 mph (64.37 km/h) | 42.96 mph (69.13 km/h) |
| 45 mph (72.42 km/h) | 48.33 mph (77.78 km/h) |
| 50 mph (80.47 km/h) | 53.7 mph (86.42 km/h) |
| 55 mph (88.51 km/h) | 59.07 mph (95.06 km/h) |
| 60 mph (96.56 km/h) | 64.44 mph (103.7 km/h) |
| 65 mph (104.61 km/h) | 69.81 mph (112.34 km/h) |
| 70 mph (112.65 km/h) | 75.18 mph (120.99 km/h) |
| 75 mph (120.7 km/h) | 80.55 mph (129.63 km/h) |
| 80 mph (128.75 km/h) | 85.92 mph (138.27 km/h) |
| 85 mph (136.79 km/h) | 91.29 mph (146.91 km/h) |
| 90 mph (144.84 km/h) | 96.66 mph (155.55 km/h) |
| 95 mph (152.89 km/h) | 102.03 mph (164.2 km/h) |
| 100 mph (160.93 km/h) | 107.4 mph (172.84 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1886 | 2191 | 2360 | 2464 | 2576 | 2657 | 2745 | 2849 | 2994 | 3138 | 3299 | 3427 | 3660 | 3917 | 4117 | 4246 | 4318 | 4583 | 4952 | 5754 |
Better Fuel Economy Factory Ratios Increased Power
