Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 130/80-18 | 120/80-18 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 26.19 (665.2) | 25.56 (649.2) | -0.63 (-16) -2.4% |
| Width inches (mm) | 5.12 (130) | 4.72 (120) | -0.39 (-10) -7.7% |
| Circum. inches (mm) | 82.28 (2089.79) | 80.3 (2039.52) | -1.98 (-50.27) -2.4% |
| Sidewall Height inches (mm) | 4.09 (104) | 3.78 (96) | -0.31 (-8) -7.7% |
| Revolutions per mile (km) | 770.1 (478.52) | 789.08 (490.31) | 18.98 (11.79) 2.5% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 19.52 mph (31.41 km/h) |
| 25 mph (40.23 km/h) | 24.4 mph (39.27 km/h) |
| 30 mph (48.28 km/h) | 29.28 mph (47.12 km/h) |
| 35 mph (56.33 km/h) | 34.16 mph (54.97 km/h) |
| 40 mph (64.37 km/h) | 39.04 mph (62.83 km/h) |
| 45 mph (72.42 km/h) | 43.92 mph (70.68 km/h) |
| 50 mph (80.47 km/h) | 48.8 mph (78.53 km/h) |
| 55 mph (88.51 km/h) | 53.68 mph (86.39 km/h) |
| 60 mph (96.56 km/h) | 58.56 mph (94.24 km/h) |
| 65 mph (104.61 km/h) | 63.44 mph (102.09 km/h) |
| 70 mph (112.65 km/h) | 68.32 mph (109.94 km/h) |
| 75 mph (120.7 km/h) | 73.2 mph (117.8 km/h) |
| 80 mph (128.75 km/h) | 78.08 mph (125.65 km/h) |
| 85 mph (136.79 km/h) | 82.96 mph (133.5 km/h) |
| 90 mph (144.84 km/h) | 87.84 mph (141.36 km/h) |
| 95 mph (152.89 km/h) | 92.71 mph (149.21 km/h) |
| 100 mph (160.93 km/h) | 97.59 mph (157.06 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
