Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 115/70-15 | 120/80-14 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 21.34 (542) | 21.56 (547.6) | 0.22 (5.6) 1% |
| Width inches (mm) | 4.53 (115) | 4.72 (120) | 0.2 (5) 4.3% |
| Circum. inches (mm) | 67.04 (1702.74) | 67.73 (1720.34) | 0.69 (17.59) 1% |
| Sidewall Height inches (mm) | 3.17 (80.5) | 3.78 (96) | 0.61 (15.5) 19.3% |
| Revolutions per mile (km) | 945.15 (587.29) | 935.48 (581.28) | -9.67 (-6.01) -1% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 20.21 mph (32.52 km/h) |
| 25 mph (40.23 km/h) | 25.26 mph (40.65 km/h) |
| 30 mph (48.28 km/h) | 30.31 mph (48.78 km/h) |
| 35 mph (56.33 km/h) | 35.36 mph (56.91 km/h) |
| 40 mph (64.37 km/h) | 40.41 mph (65.04 km/h) |
| 45 mph (72.42 km/h) | 45.46 mph (73.17 km/h) |
| 50 mph (80.47 km/h) | 50.52 mph (81.3 km/h) |
| 55 mph (88.51 km/h) | 55.57 mph (89.43 km/h) |
| 60 mph (96.56 km/h) | 60.62 mph (97.56 km/h) |
| 65 mph (104.61 km/h) | 65.67 mph (105.69 km/h) |
| 70 mph (112.65 km/h) | 70.72 mph (113.82 km/h) |
| 75 mph (120.7 km/h) | 75.77 mph (121.95 km/h) |
| 80 mph (128.75 km/h) | 80.83 mph (130.08 km/h) |
| 85 mph (136.79 km/h) | 85.88 mph (138.21 km/h) |
| 90 mph (144.84 km/h) | 90.93 mph (146.34 km/h) |
| 95 mph (152.89 km/h) | 95.98 mph (154.47 km/h) |
| 100 mph (160.93 km/h) | 101.03 mph (162.6 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
Better Fuel Economy Factory Ratios Increased Power
