Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 130/70-18 | 120/80-18 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 25.17 (639.2) | 25.56 (649.2) | 0.39 (10) 1.6% |
| Width inches (mm) | 5.12 (130) | 4.72 (120) | -0.39 (-10) -7.7% |
| Circum. inches (mm) | 79.06 (2008.11) | 80.3 (2039.52) | 1.24 (31.42) 1.6% |
| Sidewall Height inches (mm) | 3.58 (91) | 3.78 (96) | 0.2 (5) 5.5% |
| Revolutions per mile (km) | 801.42 (497.98) | 789.08 (490.31) | -12.34 (-7.67) -1.5% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 20.31 mph (32.69 km/h) |
| 25 mph (40.23 km/h) | 25.39 mph (40.86 km/h) |
| 30 mph (48.28 km/h) | 30.47 mph (49.04 km/h) |
| 35 mph (56.33 km/h) | 35.55 mph (57.21 km/h) |
| 40 mph (64.37 km/h) | 40.63 mph (65.38 km/h) |
| 45 mph (72.42 km/h) | 45.7 mph (73.55 km/h) |
| 50 mph (80.47 km/h) | 50.78 mph (81.73 km/h) |
| 55 mph (88.51 km/h) | 55.86 mph (89.9 km/h) |
| 60 mph (96.56 km/h) | 60.94 mph (98.07 km/h) |
| 65 mph (104.61 km/h) | 66.02 mph (106.24 km/h) |
| 70 mph (112.65 km/h) | 71.1 mph (114.42 km/h) |
| 75 mph (120.7 km/h) | 76.17 mph (122.59 km/h) |
| 80 mph (128.75 km/h) | 81.25 mph (130.76 km/h) |
| 85 mph (136.79 km/h) | 86.33 mph (138.93 km/h) |
| 90 mph (144.84 km/h) | 91.41 mph (147.11 km/h) |
| 95 mph (152.89 km/h) | 96.49 mph (155.28 km/h) |
| 100 mph (160.93 km/h) | 101.56 mph (163.45 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
