Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 345/35-15 | 315/45-15 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 24.51 (622.5) | 26.16 (664.5) | 1.65 (42) 6.7% |
| Width inches (mm) | 13.58 (345) | 12.4 (315) | -1.18 (-30) -8.7% |
| Circum. inches (mm) | 76.99 (1955.64) | 82.19 (2087.59) | 5.19 (131.95) 6.7% |
| Sidewall Height inches (mm) | 4.75 (120.75) | 5.58 (141.75) | 0.83 (21) 17.4% |
| Revolutions per mile (km) | 822.92 (511.34) | 770.91 (479.02) | -52.01 (-32.32) -6.3% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 21.35 mph (34.36 km/h) |
| 25 mph (40.23 km/h) | 26.69 mph (42.95 km/h) |
| 30 mph (48.28 km/h) | 32.02 mph (51.54 km/h) |
| 35 mph (56.33 km/h) | 37.36 mph (60.13 km/h) |
| 40 mph (64.37 km/h) | 42.7 mph (68.72 km/h) |
| 45 mph (72.42 km/h) | 48.04 mph (77.31 km/h) |
| 50 mph (80.47 km/h) | 53.37 mph (85.9 km/h) |
| 55 mph (88.51 km/h) | 58.71 mph (94.49 km/h) |
| 60 mph (96.56 km/h) | 64.05 mph (103.08 km/h) |
| 65 mph (104.61 km/h) | 69.39 mph (111.67 km/h) |
| 70 mph (112.65 km/h) | 74.72 mph (120.26 km/h) |
| 75 mph (120.7 km/h) | 80.06 mph (128.84 km/h) |
| 80 mph (128.75 km/h) | 85.4 mph (137.43 km/h) |
| 85 mph (136.79 km/h) | 90.73 mph (146.02 km/h) |
| 90 mph (144.84 km/h) | 96.07 mph (154.61 km/h) |
| 95 mph (152.89 km/h) | 101.41 mph (163.2 km/h) |
| 100 mph (160.93 km/h) | 106.75 mph (171.79 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1962 | 2279 | 2454 | 2563 | 2680 | 2763 | 2855 | 2964 | 3114 | 3264 | 3431 | 3565 | 3807 | 4074 | 4283 | 4416 | 4491 | 4767 | 5151 | 5986 |
Better Fuel Economy Factory Ratios Increased Power
