Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 130/80-15 | 240/40-18 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 23.19 (589) | 25.56 (649.2) | 2.37 (60.2) 10.2% |
| Width inches (mm) | 5.12 (130) | 9.45 (240) | 4.33 (110) 84.6% |
| Circum. inches (mm) | 72.85 (1850.4) | 80.3 (2039.52) | 7.45 (189.12) 10.2% |
| Sidewall Height inches (mm) | 4.09 (104) | 3.78 (96) | -0.31 (-8) -7.7% |
| Revolutions per mile (km) | 869.73 (540.42) | 789.08 (490.31) | -80.65 (-50.11) -9.3% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 22.04 mph (35.48 km/h) |
| 25 mph (40.23 km/h) | 27.56 mph (44.35 km/h) |
| 30 mph (48.28 km/h) | 33.07 mph (53.22 km/h) |
| 35 mph (56.33 km/h) | 38.58 mph (62.08 km/h) |
| 40 mph (64.37 km/h) | 44.09 mph (70.95 km/h) |
| 45 mph (72.42 km/h) | 49.6 mph (79.82 km/h) |
| 50 mph (80.47 km/h) | 55.11 mph (88.69 km/h) |
| 55 mph (88.51 km/h) | 60.62 mph (97.56 km/h) |
| 60 mph (96.56 km/h) | 66.13 mph (106.43 km/h) |
| 65 mph (104.61 km/h) | 71.64 mph (115.3 km/h) |
| 70 mph (112.65 km/h) | 77.15 mph (124.17 km/h) |
| 75 mph (120.7 km/h) | 82.67 mph (133.04 km/h) |
| 80 mph (128.75 km/h) | 88.18 mph (141.91 km/h) |
| 85 mph (136.79 km/h) | 93.69 mph (150.78 km/h) |
| 90 mph (144.84 km/h) | 99.2 mph (159.65 km/h) |
| 95 mph (152.89 km/h) | 104.71 mph (168.51 km/h) |
| 100 mph (160.93 km/h) | 110.22 mph (177.38 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
