Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 130/80-18 | 285/80-18 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 26.19 (665.2) | 35.95 (913.2) | 9.76 (248) 37.3% |
| Width inches (mm) | 5.12 (130) | 11.22 (285) | 6.1 (155) 119.2% |
| Circum. inches (mm) | 82.28 (2089.79) | 112.95 (2868.9) | 30.67 (779.11) 37.3% |
| Sidewall Height inches (mm) | 4.09 (104) | 8.98 (228) | 4.88 (124) 119.2% |
| Revolutions per mile (km) | 770.1 (478.52) | 560.96 (348.56) | -209.14 (-129.95) -27.2% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 27.46 mph (44.19 km/h) |
| 25 mph (40.23 km/h) | 34.32 mph (55.23 km/h) |
| 30 mph (48.28 km/h) | 41.18 mph (66.28 km/h) |
| 35 mph (56.33 km/h) | 48.05 mph (77.33 km/h) |
| 40 mph (64.37 km/h) | 54.91 mph (88.37 km/h) |
| 45 mph (72.42 km/h) | 61.78 mph (99.42 km/h) |
| 50 mph (80.47 km/h) | 68.64 mph (110.47 km/h) |
| 55 mph (88.51 km/h) | 75.51 mph (121.51 km/h) |
| 60 mph (96.56 km/h) | 82.37 mph (132.56 km/h) |
| 65 mph (104.61 km/h) | 89.23 mph (143.61 km/h) |
| 70 mph (112.65 km/h) | 96.1 mph (154.65 km/h) |
| 75 mph (120.7 km/h) | 102.96 mph (165.7 km/h) |
| 80 mph (128.75 km/h) | 109.83 mph (176.75 km/h) |
| 85 mph (136.79 km/h) | 116.69 mph (187.79 km/h) |
| 90 mph (144.84 km/h) | 123.55 mph (198.84 km/h) |
| 95 mph (152.89 km/h) | 130.42 mph (209.89 km/h) |
| 100 mph (160.93 km/h) | 137.28 mph (220.93 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1428 | 1658 | 1786 | 1865 | 1950 | 2011 | 2078 | 2156 | 2266 | 2375 | 2497 | 2594 | 2770 | 2964 | 3116 | 3213 | 3268 | 3469 | 3748 | 4356 |
Better Fuel Economy Factory Ratios Increased Power
