Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 315/40-26 | 37/12.5-26 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 35.92 (912.4) | 37.02 (940.24) | 1.1 (27.84) 3.1% |
| Width inches (mm) | 12.4 (315) | 12.52 (318) | 0.12 (3) 1% |
| Circum. inches (mm) | 112.85 (2866.39) | 116.29 (2953.85) | 3.44 (87.46) 3.1% |
| Sidewall Height inches (mm) | 4.96 (126) | 5.51 (139.92) | 0.55 (13.92) 11% |
| Revolutions per mile (km) | 561.45 (348.87) | 544.83 (338.54) | -16.62 (-10.33) -3% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 20.61 mph (33.17 km/h) |
| 25 mph (40.23 km/h) | 25.76 mph (41.46 km/h) |
| 30 mph (48.28 km/h) | 30.92 mph (49.75 km/h) |
| 35 mph (56.33 km/h) | 36.07 mph (58.05 km/h) |
| 40 mph (64.37 km/h) | 41.22 mph (66.34 km/h) |
| 45 mph (72.42 km/h) | 46.37 mph (74.63 km/h) |
| 50 mph (80.47 km/h) | 51.53 mph (82.92 km/h) |
| 55 mph (88.51 km/h) | 56.68 mph (91.21 km/h) |
| 60 mph (96.56 km/h) | 61.83 mph (99.51 km/h) |
| 65 mph (104.61 km/h) | 66.98 mph (107.8 km/h) |
| 70 mph (112.65 km/h) | 72.14 mph (116.09 km/h) |
| 75 mph (120.7 km/h) | 77.29 mph (124.38 km/h) |
| 80 mph (128.75 km/h) | 82.44 mph (132.68 km/h) |
| 85 mph (136.79 km/h) | 87.59 mph (140.97 km/h) |
| 90 mph (144.84 km/h) | 92.75 mph (149.26 km/h) |
| 95 mph (152.89 km/h) | 97.9 mph (157.55 km/h) |
| 100 mph (160.93 km/h) | 103.05 mph (165.85 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1386 | 1611 | 1735 | 1811 | 1894 | 1953 | 2018 | 2094 | 2201 | 2307 | 2425 | 2519 | 2690 | 2879 | 3027 | 3121 | 3174 | 3369 | 3640 | 4230 |
Better Fuel Economy Factory Ratios Increased Power
