Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 315/30-19 | 345/25-19 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 26.44 (671.6) | 25.79 (655.1) | -0.65 (-16.5) -2.5% |
| Width inches (mm) | 12.4 (315) | 13.58 (345) | 1.18 (30) 9.5% |
| Circum. inches (mm) | 83.07 (2109.89) | 81.03 (2058.06) | -2.04 (-51.84) -2.5% |
| Sidewall Height inches (mm) | 3.72 (94.5) | 3.4 (86.25) | -0.32 (-8.25) -8.7% |
| Revolutions per mile (km) | 762.76 (473.96) | 781.97 (485.89) | 19.21 (11.94) 2.5% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 19.51 mph (31.4 km/h) |
| 25 mph (40.23 km/h) | 24.39 mph (39.25 km/h) |
| 30 mph (48.28 km/h) | 29.26 mph (47.09 km/h) |
| 35 mph (56.33 km/h) | 34.14 mph (54.94 km/h) |
| 40 mph (64.37 km/h) | 39.02 mph (62.79 km/h) |
| 45 mph (72.42 km/h) | 43.89 mph (70.64 km/h) |
| 50 mph (80.47 km/h) | 48.77 mph (78.49 km/h) |
| 55 mph (88.51 km/h) | 53.65 mph (86.34 km/h) |
| 60 mph (96.56 km/h) | 58.53 mph (94.19 km/h) |
| 65 mph (104.61 km/h) | 63.4 mph (102.04 km/h) |
| 70 mph (112.65 km/h) | 68.28 mph (109.89 km/h) |
| 75 mph (120.7 km/h) | 73.16 mph (117.74 km/h) |
| 80 mph (128.75 km/h) | 78.03 mph (125.58 km/h) |
| 85 mph (136.79 km/h) | 82.91 mph (133.43 km/h) |
| 90 mph (144.84 km/h) | 87.79 mph (141.28 km/h) |
| 95 mph (152.89 km/h) | 92.67 mph (149.13 km/h) |
| 100 mph (160.93 km/h) | 97.54 mph (156.98 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1990 | 2312 | 2490 | 2600 | 2718 | 2803 | 2896 | 3006 | 3159 | 3311 | 3480 | 3616 | 3861 | 4132 | 4344 | 4480 | 4556 | 4835 | 5225 | 6072 |
Better Fuel Economy Factory Ratios Increased Power
