Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 230/60-15 | 240/40-18 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 25.87 (657) | 25.56 (649.2) | -0.31 (-7.8) -1.2% |
| Width inches (mm) | 9.06 (230) | 9.45 (240) | 0.39 (10) 4.3% |
| Circum. inches (mm) | 81.26 (2064.03) | 80.3 (2039.52) | -0.96 (-24.5) -1.2% |
| Sidewall Height inches (mm) | 5.43 (138) | 3.78 (96) | -1.65 (-42) -30.4% |
| Revolutions per mile (km) | 779.71 (484.49) | 789.08 (490.31) | 9.37 (5.82) 1.2% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 19.76 mph (31.8 km/h) |
| 25 mph (40.23 km/h) | 24.7 mph (39.76 km/h) |
| 30 mph (48.28 km/h) | 29.64 mph (47.71 km/h) |
| 35 mph (56.33 km/h) | 34.58 mph (55.66 km/h) |
| 40 mph (64.37 km/h) | 39.53 mph (63.61 km/h) |
| 45 mph (72.42 km/h) | 44.47 mph (71.56 km/h) |
| 50 mph (80.47 km/h) | 49.41 mph (79.51 km/h) |
| 55 mph (88.51 km/h) | 54.35 mph (87.46 km/h) |
| 60 mph (96.56 km/h) | 59.29 mph (95.41 km/h) |
| 65 mph (104.61 km/h) | 64.23 mph (103.37 km/h) |
| 70 mph (112.65 km/h) | 69.17 mph (111.32 km/h) |
| 75 mph (120.7 km/h) | 74.11 mph (119.27 km/h) |
| 80 mph (128.75 km/h) | 79.05 mph (127.22 km/h) |
| 85 mph (136.79 km/h) | 83.99 mph (135.17 km/h) |
| 90 mph (144.84 km/h) | 88.93 mph (143.12 km/h) |
| 95 mph (152.89 km/h) | 93.87 mph (151.07 km/h) |
| 100 mph (160.93 km/h) | 98.81 mph (159.02 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
