Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 120/70-15 | 100/70-15 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 21.61 (549) | 20.51 (521) | -1.1 (-28) -5.1% |
| Width inches (mm) | 4.72 (120) | 3.94 (100) | -0.79 (-20) -16.7% |
| Circum. inches (mm) | 67.9 (1724.73) | 64.44 (1636.77) | -3.46 (-87.96) -5.1% |
| Sidewall Height inches (mm) | 3.31 (84) | 2.76 (70) | -0.55 (-14) -16.7% |
| Revolutions per mile (km) | 933.1 (579.8) | 983.24 (610.96) | 50.15 (31.16) 5.4% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 18.98 mph (30.55 km/h) |
| 25 mph (40.23 km/h) | 23.72 mph (38.18 km/h) |
| 30 mph (48.28 km/h) | 28.47 mph (45.82 km/h) |
| 35 mph (56.33 km/h) | 33.21 mph (53.45 km/h) |
| 40 mph (64.37 km/h) | 37.96 mph (61.09 km/h) |
| 45 mph (72.42 km/h) | 42.7 mph (68.73 km/h) |
| 50 mph (80.47 km/h) | 47.45 mph (76.36 km/h) |
| 55 mph (88.51 km/h) | 52.19 mph (84 km/h) |
| 60 mph (96.56 km/h) | 56.94 mph (91.64 km/h) |
| 65 mph (104.61 km/h) | 61.68 mph (99.27 km/h) |
| 70 mph (112.65 km/h) | 66.43 mph (106.91 km/h) |
| 75 mph (120.7 km/h) | 71.17 mph (114.55 km/h) |
| 80 mph (128.75 km/h) | 75.92 mph (122.18 km/h) |
| 85 mph (136.79 km/h) | 80.66 mph (129.82 km/h) |
| 90 mph (144.84 km/h) | 85.41 mph (137.45 km/h) |
| 95 mph (152.89 km/h) | 90.15 mph (145.09 km/h) |
| 100 mph (160.93 km/h) | 94.9 mph (152.73 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
