Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 315/40-26 | 315/65-20 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 35.92 (912.4) | 36.12 (917.5) | 0.2 (5.1) 0.6% |
| Width inches (mm) | 12.4 (315) | 12.4 (315) | 0 (0) 0% |
| Circum. inches (mm) | 112.85 (2866.39) | 113.48 (2882.41) | 0.63 (16.02) 0.6% |
| Sidewall Height inches (mm) | 4.96 (126) | 8.06 (204.75) | 3.1 (78.75) 62.5% |
| Revolutions per mile (km) | 561.45 (348.87) | 558.33 (346.93) | -3.12 (-1.94) -0.6% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 20.11 mph (32.37 km/h) |
| 25 mph (40.23 km/h) | 25.14 mph (40.46 km/h) |
| 30 mph (48.28 km/h) | 30.17 mph (48.55 km/h) |
| 35 mph (56.33 km/h) | 35.2 mph (56.64 km/h) |
| 40 mph (64.37 km/h) | 40.22 mph (64.73 km/h) |
| 45 mph (72.42 km/h) | 45.25 mph (72.83 km/h) |
| 50 mph (80.47 km/h) | 50.28 mph (80.92 km/h) |
| 55 mph (88.51 km/h) | 55.31 mph (89.01 km/h) |
| 60 mph (96.56 km/h) | 60.34 mph (97.1 km/h) |
| 65 mph (104.61 km/h) | 65.36 mph (105.19 km/h) |
| 70 mph (112.65 km/h) | 70.39 mph (113.28 km/h) |
| 75 mph (120.7 km/h) | 75.42 mph (121.38 km/h) |
| 80 mph (128.75 km/h) | 80.45 mph (129.47 km/h) |
| 85 mph (136.79 km/h) | 85.48 mph (137.56 km/h) |
| 90 mph (144.84 km/h) | 90.5 mph (145.65 km/h) |
| 95 mph (152.89 km/h) | 95.53 mph (153.74 km/h) |
| 100 mph (160.93 km/h) | 100.56 mph (161.83 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1421 | 1651 | 1778 | 1856 | 1941 | 2001 | 2068 | 2146 | 2255 | 2364 | 2485 | 2582 | 2757 | 2951 | 3102 | 3198 | 3253 | 3452 | 3730 | 4335 |
Better Fuel Economy Factory Ratios Increased Power
