Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 115/70-15 | 140/80-14 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 21.34 (542) | 22.82 (579.6) | 1.48 (37.6) 6.9% |
| Width inches (mm) | 4.53 (115) | 5.51 (140) | 0.98 (25) 21.7% |
| Circum. inches (mm) | 67.04 (1702.74) | 71.69 (1820.87) | 4.65 (118.12) 6.9% |
| Sidewall Height inches (mm) | 3.17 (80.5) | 4.41 (112) | 1.24 (31.5) 39.1% |
| Revolutions per mile (km) | 945.15 (587.29) | 883.83 (549.19) | -61.31 (-38.1) -6.5% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 21.39 mph (34.42 km/h) |
| 25 mph (40.23 km/h) | 26.73 mph (43.02 km/h) |
| 30 mph (48.28 km/h) | 32.08 mph (51.63 km/h) |
| 35 mph (56.33 km/h) | 37.43 mph (60.23 km/h) |
| 40 mph (64.37 km/h) | 42.77 mph (68.84 km/h) |
| 45 mph (72.42 km/h) | 48.12 mph (77.44 km/h) |
| 50 mph (80.47 km/h) | 53.47 mph (86.05 km/h) |
| 55 mph (88.51 km/h) | 58.82 mph (94.65 km/h) |
| 60 mph (96.56 km/h) | 64.16 mph (103.26 km/h) |
| 65 mph (104.61 km/h) | 69.51 mph (111.86 km/h) |
| 70 mph (112.65 km/h) | 74.86 mph (120.47 km/h) |
| 75 mph (120.7 km/h) | 80.2 mph (129.07 km/h) |
| 80 mph (128.75 km/h) | 85.55 mph (137.68 km/h) |
| 85 mph (136.79 km/h) | 90.9 mph (146.28 km/h) |
| 90 mph (144.84 km/h) | 96.24 mph (154.89 km/h) |
| 95 mph (152.89 km/h) | 101.59 mph (163.49 km/h) |
| 100 mph (160.93 km/h) | 106.94 mph (172.1 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2249 | 2613 | 2814 | 2938 | 3072 | 3168 | 3273 | 3398 | 3570 | 3742 | 3934 | 4087 | 4364 | 4671 | 4910 | 5063 | 5149 | 5465 | 5905 | 6862 |
Better Fuel Economy Factory Ratios Increased Power
