Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 250/40-18 | 260/40-18 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 25.87 (657.2) | 26.19 (665.2) | 0.31 (8) 1.2% |
| Width inches (mm) | 9.84 (250) | 10.24 (260) | 0.39 (10) 4% |
| Circum. inches (mm) | 81.29 (2064.65) | 82.28 (2089.79) | 0.99 (25.13) 1.2% |
| Sidewall Height inches (mm) | 3.94 (100) | 4.09 (104) | 0.16 (4) 4% |
| Revolutions per mile (km) | 779.47 (484.34) | 770.1 (478.52) | -9.37 (-5.82) -1.2% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 20.24 mph (32.58 km/h) |
| 25 mph (40.23 km/h) | 25.3 mph (40.72 km/h) |
| 30 mph (48.28 km/h) | 30.37 mph (48.87 km/h) |
| 35 mph (56.33 km/h) | 35.43 mph (57.01 km/h) |
| 40 mph (64.37 km/h) | 40.49 mph (65.16 km/h) |
| 45 mph (72.42 km/h) | 45.55 mph (73.3 km/h) |
| 50 mph (80.47 km/h) | 50.61 mph (81.45 km/h) |
| 55 mph (88.51 km/h) | 55.67 mph (89.59 km/h) |
| 60 mph (96.56 km/h) | 60.73 mph (97.74 km/h) |
| 65 mph (104.61 km/h) | 65.79 mph (105.88 km/h) |
| 70 mph (112.65 km/h) | 70.85 mph (114.03 km/h) |
| 75 mph (120.7 km/h) | 75.91 mph (122.17 km/h) |
| 80 mph (128.75 km/h) | 80.97 mph (130.31 km/h) |
| 85 mph (136.79 km/h) | 86.03 mph (138.46 km/h) |
| 90 mph (144.84 km/h) | 91.1 mph (146.6 km/h) |
| 95 mph (152.89 km/h) | 96.16 mph (154.75 km/h) |
| 100 mph (160.93 km/h) | 101.22 mph (162.89 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1960 | 2277 | 2452 | 2560 | 2677 | 2760 | 2852 | 2960 | 3111 | 3261 | 3427 | 3561 | 3803 | 4070 | 4278 | 4412 | 4487 | 4762 | 5145 | 5979 |
Better Fuel Economy Factory Ratios Increased Power
