Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 275/50-15 | 315/50-15 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 25.83 (656) | 27.4 (696) | 1.57 (40) 6.1% |
| Width inches (mm) | 10.83 (275) | 12.4 (315) | 1.57 (40) 14.5% |
| Circum. inches (mm) | 81.14 (2060.88) | 86.08 (2186.55) | 4.95 (125.66) 6.1% |
| Sidewall Height inches (mm) | 5.41 (137.5) | 6.2 (157.5) | 0.79 (20) 14.5% |
| Revolutions per mile (km) | 780.9 (485.23) | 736.02 (457.34) | -44.88 (-27.89) -5.7% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 21.22 mph (34.15 km/h) |
| 25 mph (40.23 km/h) | 26.52 mph (42.69 km/h) |
| 30 mph (48.28 km/h) | 31.83 mph (51.22 km/h) |
| 35 mph (56.33 km/h) | 37.13 mph (59.76 km/h) |
| 40 mph (64.37 km/h) | 42.44 mph (68.3 km/h) |
| 45 mph (72.42 km/h) | 47.74 mph (76.84 km/h) |
| 50 mph (80.47 km/h) | 53.05 mph (85.37 km/h) |
| 55 mph (88.51 km/h) | 58.35 mph (93.91 km/h) |
| 60 mph (96.56 km/h) | 63.66 mph (102.45 km/h) |
| 65 mph (104.61 km/h) | 68.96 mph (110.99 km/h) |
| 70 mph (112.65 km/h) | 74.27 mph (119.52 km/h) |
| 75 mph (120.7 km/h) | 79.57 mph (128.06 km/h) |
| 80 mph (128.75 km/h) | 84.88 mph (136.6 km/h) |
| 85 mph (136.79 km/h) | 90.18 mph (145.14 km/h) |
| 90 mph (144.84 km/h) | 95.49 mph (153.67 km/h) |
| 95 mph (152.89 km/h) | 100.79 mph (162.21 km/h) |
| 100 mph (160.93 km/h) | 106.1 mph (170.75 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1873 | 2176 | 2343 | 2447 | 2558 | 2638 | 2726 | 2829 | 2973 | 3116 | 3276 | 3403 | 3634 | 3890 | 4089 | 4216 | 4288 | 4551 | 4918 | 5715 |
Better Fuel Economy Factory Ratios Increased Power
