Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 225/75-15 | 315/80-15 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 28.29 (718.5) | 34.84 (885) | 6.56 (166.5) 23.2% |
| Width inches (mm) | 8.86 (225) | 12.4 (315) | 3.54 (90) 40% |
| Circum. inches (mm) | 88.87 (2257.23) | 109.46 (2780.31) | 20.59 (523.08) 23.2% |
| Sidewall Height inches (mm) | 6.64 (168.75) | 9.92 (252) | 3.28 (83.25) 49.3% |
| Revolutions per mile (km) | 712.97 (443.02) | 578.84 (359.67) | -134.14 (-83.35) -18.8% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 24.63 mph (39.65 km/h) |
| 25 mph (40.23 km/h) | 30.79 mph (49.56 km/h) |
| 30 mph (48.28 km/h) | 36.95 mph (59.47 km/h) |
| 35 mph (56.33 km/h) | 43.11 mph (69.38 km/h) |
| 40 mph (64.37 km/h) | 49.27 mph (79.29 km/h) |
| 45 mph (72.42 km/h) | 55.43 mph (89.2 km/h) |
| 50 mph (80.47 km/h) | 61.59 mph (99.11 km/h) |
| 55 mph (88.51 km/h) | 67.75 mph (109.03 km/h) |
| 60 mph (96.56 km/h) | 73.9 mph (118.94 km/h) |
| 65 mph (104.61 km/h) | 80.06 mph (128.85 km/h) |
| 70 mph (112.65 km/h) | 86.22 mph (138.76 km/h) |
| 75 mph (120.7 km/h) | 92.38 mph (148.67 km/h) |
| 80 mph (128.75 km/h) | 98.54 mph (158.58 km/h) |
| 85 mph (136.79 km/h) | 104.7 mph (168.49 km/h) |
| 90 mph (144.84 km/h) | 110.86 mph (178.41 km/h) |
| 95 mph (152.89 km/h) | 117.01 mph (188.32 km/h) |
| 100 mph (160.93 km/h) | 123.17 mph (198.23 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1473 | 1711 | 1843 | 1924 | 2012 | 2075 | 2144 | 2225 | 2338 | 2451 | 2576 | 2677 | 2858 | 3059 | 3216 | 3316 | 3372 | 3579 | 3867 | 4494 |
Better Fuel Economy Factory Ratios Increased Power
