Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 120/90-18 | 130/70-18 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 26.5 (673.2) | 25.17 (639.2) | -1.34 (-34) -5.1% |
| Width inches (mm) | 4.72 (120) | 5.12 (130) | 0.39 (10) 8.3% |
| Circum. inches (mm) | 83.26 (2114.92) | 79.06 (2008.11) | -4.21 (-106.81) -5.1% |
| Sidewall Height inches (mm) | 4.25 (108) | 3.58 (91) | -0.67 (-17) -15.7% |
| Revolutions per mile (km) | 760.95 (472.83) | 801.42 (497.98) | 40.48 (25.15) 5.3% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 18.99 mph (30.56 km/h) |
| 25 mph (40.23 km/h) | 23.74 mph (38.2 km/h) |
| 30 mph (48.28 km/h) | 28.48 mph (45.84 km/h) |
| 35 mph (56.33 km/h) | 33.23 mph (53.48 km/h) |
| 40 mph (64.37 km/h) | 37.98 mph (61.12 km/h) |
| 45 mph (72.42 km/h) | 42.73 mph (68.76 km/h) |
| 50 mph (80.47 km/h) | 47.47 mph (76.4 km/h) |
| 55 mph (88.51 km/h) | 52.22 mph (84.04 km/h) |
| 60 mph (96.56 km/h) | 56.97 mph (91.68 km/h) |
| 65 mph (104.61 km/h) | 61.72 mph (99.32 km/h) |
| 70 mph (112.65 km/h) | 66.46 mph (106.96 km/h) |
| 75 mph (120.7 km/h) | 71.21 mph (114.61 km/h) |
| 80 mph (128.75 km/h) | 75.96 mph (122.25 km/h) |
| 85 mph (136.79 km/h) | 80.71 mph (129.89 km/h) |
| 90 mph (144.84 km/h) | 85.45 mph (137.53 km/h) |
| 95 mph (152.89 km/h) | 90.2 mph (145.17 km/h) |
| 100 mph (160.93 km/h) | 94.95 mph (152.81 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2039 | 2369 | 2552 | 2664 | 2786 | 2873 | 2968 | 3081 | 3237 | 3393 | 3567 | 3706 | 3957 | 4235 | 4452 | 4591 | 4669 | 4955 | 5355 | 6223 |
Better Fuel Economy Factory Ratios Increased Power
