Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 115/80-15 | 100/100-15 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 22.24 (565) | 22.87 (581) | 0.63 (16) 2.8% |
| Width inches (mm) | 4.53 (115) | 3.94 (100) | -0.59 (-15) -13% |
| Circum. inches (mm) | 69.88 (1775) | 71.86 (1825.27) | 1.98 (50.27) 2.8% |
| Sidewall Height inches (mm) | 3.62 (92) | 3.94 (100) | 0.31 (8) 8.7% |
| Revolutions per mile (km) | 906.67 (563.38) | 881.7 (547.86) | -24.97 (-15.51) -2.8% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 20.57 mph (33.1 km/h) |
| 25 mph (40.23 km/h) | 25.71 mph (41.37 km/h) |
| 30 mph (48.28 km/h) | 30.85 mph (49.65 km/h) |
| 35 mph (56.33 km/h) | 35.99 mph (57.92 km/h) |
| 40 mph (64.37 km/h) | 41.13 mph (66.2 km/h) |
| 45 mph (72.42 km/h) | 46.27 mph (74.47 km/h) |
| 50 mph (80.47 km/h) | 51.42 mph (82.75 km/h) |
| 55 mph (88.51 km/h) | 56.56 mph (91.02 km/h) |
| 60 mph (96.56 km/h) | 61.7 mph (99.3 km/h) |
| 65 mph (104.61 km/h) | 66.84 mph (107.57 km/h) |
| 70 mph (112.65 km/h) | 71.98 mph (115.84 km/h) |
| 75 mph (120.7 km/h) | 77.12 mph (124.12 km/h) |
| 80 mph (128.75 km/h) | 82.27 mph (132.39 km/h) |
| 85 mph (136.79 km/h) | 87.41 mph (140.67 km/h) |
| 90 mph (144.84 km/h) | 92.55 mph (148.94 km/h) |
| 95 mph (152.89 km/h) | 97.69 mph (157.22 km/h) |
| 100 mph (160.93 km/h) | 102.83 mph (165.49 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2244 | 2607 | 2807 | 2931 | 3065 | 3160 | 3265 | 3390 | 3561 | 3733 | 3924 | 4077 | 4354 | 4659 | 4898 | 5051 | 5137 | 5452 | 5891 | 6846 |
Better Fuel Economy Factory Ratios Increased Power
