Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 285/65-20 | 315/25-19 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 34.59 (878.5) | 25.2 (640.1) | -9.39 (-238.4) -27.1% |
| Width inches (mm) | 11.22 (285) | 12.4 (315) | 1.18 (30) 10.5% |
| Circum. inches (mm) | 108.66 (2759.89) | 79.17 (2010.93) | -29.49 (-748.96) -27.1% |
| Sidewall Height inches (mm) | 7.29 (185.25) | 3.1 (78.75) | -4.19 (-106.5) -57.5% |
| Revolutions per mile (km) | 583.12 (362.33) | 800.3 (497.28) | 217.18 (134.95) 37.2% |
315/25-19 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 14.57 mph (23.45 km/h) |
| 25 mph (40.23 km/h) | 18.22 mph (29.32 km/h) |
| 30 mph (48.28 km/h) | 21.86 mph (35.18 km/h) |
| 35 mph (56.33 km/h) | 25.5 mph (41.04 km/h) |
| 40 mph (64.37 km/h) | 29.15 mph (46.9 km/h) |
| 45 mph (72.42 km/h) | 32.79 mph (52.77 km/h) |
| 50 mph (80.47 km/h) | 36.43 mph (58.63 km/h) |
| 55 mph (88.51 km/h) | 40.07 mph (64.49 km/h) |
| 60 mph (96.56 km/h) | 43.72 mph (70.36 km/h) |
| 65 mph (104.61 km/h) | 47.36 mph (76.22 km/h) |
| 70 mph (112.65 km/h) | 51 mph (82.08 km/h) |
| 75 mph (120.7 km/h) | 54.65 mph (87.95 km/h) |
| 80 mph (128.75 km/h) | 58.29 mph (93.81 km/h) |
| 85 mph (136.79 km/h) | 61.93 mph (99.67 km/h) |
| 90 mph (144.84 km/h) | 65.58 mph (105.54 km/h) |
| 95 mph (152.89 km/h) | 69.22 mph (111.4 km/h) |
| 100 mph (160.93 km/h) | 72.86 mph (117.26 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2037 | 2366 | 2548 | 2661 | 2782 | 2869 | 2964 | 3077 | 3233 | 3389 | 3562 | 3701 | 3952 | 4229 | 4446 | 4585 | 4663 | 4949 | 5347 | 6214 |
Better Fuel Economy Factory Ratios Increased Power
