Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 115/80-15 | 115/80-11 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 22.24 (565) | 18.24 (463.4) | -4 (-101.6) -18% |
| Width inches (mm) | 4.53 (115) | 4.53 (115) | 0 (0) 0% |
| Circum. inches (mm) | 69.88 (1775) | 57.32 (1455.81) | -12.57 (-319.19) -18% |
| Sidewall Height inches (mm) | 3.62 (92) | 3.62 (92) | 0 (0) 0% |
| Revolutions per mile (km) | 906.67 (563.38) | 1105.46 (686.9) | 198.79 (123.52) 21.9% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 16.4 mph (26.4 km/h) |
| 25 mph (40.23 km/h) | 20.5 mph (33 km/h) |
| 30 mph (48.28 km/h) | 24.61 mph (39.6 km/h) |
| 35 mph (56.33 km/h) | 28.71 mph (46.2 km/h) |
| 40 mph (64.37 km/h) | 32.81 mph (52.8 km/h) |
| 45 mph (72.42 km/h) | 36.91 mph (59.4 km/h) |
| 50 mph (80.47 km/h) | 41.01 mph (66 km/h) |
| 55 mph (88.51 km/h) | 45.11 mph (72.6 km/h) |
| 60 mph (96.56 km/h) | 49.21 mph (79.2 km/h) |
| 65 mph (104.61 km/h) | 53.31 mph (85.8 km/h) |
| 70 mph (112.65 km/h) | 57.41 mph (92.4 km/h) |
| 75 mph (120.7 km/h) | 61.51 mph (99 km/h) |
| 80 mph (128.75 km/h) | 65.61 mph (105.6 km/h) |
| 85 mph (136.79 km/h) | 69.72 mph (112.2 km/h) |
| 90 mph (144.84 km/h) | 73.82 mph (118.8 km/h) |
| 95 mph (152.89 km/h) | 77.92 mph (125.4 km/h) |
| 100 mph (160.93 km/h) | 82.02 mph (131.99 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
