Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 115/70-15 | 115/80-14 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 21.34 (542) | 21.24 (539.6) | -0.09 (-2.4) -0.4% |
| Width inches (mm) | 4.53 (115) | 4.53 (115) | 0 (0) 0% |
| Circum. inches (mm) | 67.04 (1702.74) | 66.74 (1695.2) | -0.3 (-7.54) -0.4% |
| Sidewall Height inches (mm) | 3.17 (80.5) | 3.62 (92) | 0.45 (11.5) 14.3% |
| Revolutions per mile (km) | 945.15 (587.29) | 949.35 (589.9) | 4.2 (2.61) 0.4% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 19.91 mph (32.04 km/h) |
| 25 mph (40.23 km/h) | 24.89 mph (40.06 km/h) |
| 30 mph (48.28 km/h) | 29.87 mph (48.07 km/h) |
| 35 mph (56.33 km/h) | 34.85 mph (56.08 km/h) |
| 40 mph (64.37 km/h) | 39.82 mph (64.09 km/h) |
| 45 mph (72.42 km/h) | 44.8 mph (72.1 km/h) |
| 50 mph (80.47 km/h) | 49.78 mph (80.11 km/h) |
| 55 mph (88.51 km/h) | 54.76 mph (88.12 km/h) |
| 60 mph (96.56 km/h) | 59.73 mph (96.13 km/h) |
| 65 mph (104.61 km/h) | 64.71 mph (104.14 km/h) |
| 70 mph (112.65 km/h) | 69.69 mph (112.16 km/h) |
| 75 mph (120.7 km/h) | 74.67 mph (120.17 km/h) |
| 80 mph (128.75 km/h) | 79.65 mph (128.18 km/h) |
| 85 mph (136.79 km/h) | 84.62 mph (136.19 km/h) |
| 90 mph (144.84 km/h) | 89.6 mph (144.2 km/h) |
| 95 mph (152.89 km/h) | 94.58 mph (152.21 km/h) |
| 100 mph (160.93 km/h) | 99.56 mph (160.22 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
