Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 250/70-15 | 315/70-15 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 28.78 (731) | 32.36 (822) | 3.58 (91) 12.4% |
| Width inches (mm) | 9.84 (250) | 12.4 (315) | 2.56 (65) 26% |
| Circum. inches (mm) | 90.41 (2296.5) | 101.67 (2582.39) | 11.26 (285.88) 12.4% |
| Sidewall Height inches (mm) | 6.89 (175) | 8.68 (220.5) | 1.79 (45.5) 26% |
| Revolutions per mile (km) | 700.78 (435.44) | 623.2 (387.24) | -77.58 (-48.21) -11.1% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 22.49 mph (36.19 km/h) |
| 25 mph (40.23 km/h) | 28.11 mph (45.24 km/h) |
| 30 mph (48.28 km/h) | 33.73 mph (54.29 km/h) |
| 35 mph (56.33 km/h) | 39.36 mph (63.34 km/h) |
| 40 mph (64.37 km/h) | 44.98 mph (72.39 km/h) |
| 45 mph (72.42 km/h) | 50.6 mph (81.44 km/h) |
| 50 mph (80.47 km/h) | 56.22 mph (90.48 km/h) |
| 55 mph (88.51 km/h) | 61.85 mph (99.53 km/h) |
| 60 mph (96.56 km/h) | 67.47 mph (108.58 km/h) |
| 65 mph (104.61 km/h) | 73.09 mph (117.63 km/h) |
| 70 mph (112.65 km/h) | 78.71 mph (126.68 km/h) |
| 75 mph (120.7 km/h) | 84.34 mph (135.73 km/h) |
| 80 mph (128.75 km/h) | 89.96 mph (144.78 km/h) |
| 85 mph (136.79 km/h) | 95.58 mph (153.82 km/h) |
| 90 mph (144.84 km/h) | 101.2 mph (162.87 km/h) |
| 95 mph (152.89 km/h) | 106.83 mph (171.92 km/h) |
| 100 mph (160.93 km/h) | 112.45 mph (180.97 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1586 | 1842 | 1984 | 2072 | 2166 | 2234 | 2308 | 2396 | 2517 | 2639 | 2774 | 2882 | 3077 | 3293 | 3462 | 3570 | 3631 | 3853 | 4164 | 4839 |
Better Fuel Economy Factory Ratios Increased Power
