Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 130/90-18 | 120/80-18 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 27.21 (691.2) | 25.56 (649.2) | -1.65 (-42) -6.1% |
| Width inches (mm) | 5.12 (130) | 4.72 (120) | -0.39 (-10) -7.7% |
| Circum. inches (mm) | 85.49 (2171.47) | 80.3 (2039.52) | -5.19 (-131.95) -6.1% |
| Sidewall Height inches (mm) | 4.61 (117) | 3.78 (96) | -0.83 (-21) -17.9% |
| Revolutions per mile (km) | 741.13 (460.52) | 789.08 (490.31) | 47.95 (29.79) 6.5% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 18.78 mph (30.23 km/h) |
| 25 mph (40.23 km/h) | 23.48 mph (37.79 km/h) |
| 30 mph (48.28 km/h) | 28.18 mph (45.35 km/h) |
| 35 mph (56.33 km/h) | 32.87 mph (52.9 km/h) |
| 40 mph (64.37 km/h) | 37.57 mph (60.46 km/h) |
| 45 mph (72.42 km/h) | 42.27 mph (68.02 km/h) |
| 50 mph (80.47 km/h) | 46.96 mph (75.58 km/h) |
| 55 mph (88.51 km/h) | 51.66 mph (83.14 km/h) |
| 60 mph (96.56 km/h) | 56.35 mph (90.69 km/h) |
| 65 mph (104.61 km/h) | 61.05 mph (98.25 km/h) |
| 70 mph (112.65 km/h) | 65.75 mph (105.81 km/h) |
| 75 mph (120.7 km/h) | 70.44 mph (113.37 km/h) |
| 80 mph (128.75 km/h) | 75.14 mph (120.92 km/h) |
| 85 mph (136.79 km/h) | 79.84 mph (128.48 km/h) |
| 90 mph (144.84 km/h) | 84.53 mph (136.04 km/h) |
| 95 mph (152.89 km/h) | 89.23 mph (143.6 km/h) |
| 100 mph (160.93 km/h) | 93.92 mph (151.16 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2008 | 2333 | 2512 | 2623 | 2743 | 2828 | 2922 | 3033 | 3187 | 3341 | 3512 | 3649 | 3896 | 4170 | 4384 | 4520 | 4597 | 4879 | 5272 | 6127 |
Better Fuel Economy Factory Ratios Increased Power
