Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 125/70-15 | 115/65-15 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 21.89 (556) | 20.89 (530.5) | -1 (-25.5) -4.6% |
| Width inches (mm) | 4.92 (125) | 4.53 (115) | -0.39 (-10) -8% |
| Circum. inches (mm) | 68.77 (1746.73) | 65.61 (1666.61) | -3.15 (-80.11) -4.6% |
| Sidewall Height inches (mm) | 3.44 (87.5) | 2.94 (74.75) | -0.5 (-12.75) -14.6% |
| Revolutions per mile (km) | 921.35 (572.5) | 965.64 (600.02) | 44.29 (27.52) 4.8% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 19.08 mph (30.71 km/h) |
| 25 mph (40.23 km/h) | 23.85 mph (38.39 km/h) |
| 30 mph (48.28 km/h) | 28.62 mph (46.07 km/h) |
| 35 mph (56.33 km/h) | 33.39 mph (53.74 km/h) |
| 40 mph (64.37 km/h) | 38.17 mph (61.42 km/h) |
| 45 mph (72.42 km/h) | 42.94 mph (69.1 km/h) |
| 50 mph (80.47 km/h) | 47.71 mph (76.78 km/h) |
| 55 mph (88.51 km/h) | 52.48 mph (84.45 km/h) |
| 60 mph (96.56 km/h) | 57.25 mph (92.13 km/h) |
| 65 mph (104.61 km/h) | 62.02 mph (99.81 km/h) |
| 70 mph (112.65 km/h) | 66.79 mph (107.49 km/h) |
| 75 mph (120.7 km/h) | 71.56 mph (115.17 km/h) |
| 80 mph (128.75 km/h) | 76.33 mph (122.84 km/h) |
| 85 mph (136.79 km/h) | 81.1 mph (130.52 km/h) |
| 90 mph (144.84 km/h) | 85.87 mph (138.2 km/h) |
| 95 mph (152.89 km/h) | 90.64 mph (145.88 km/h) |
| 100 mph (160.93 km/h) | 95.41 mph (153.55 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
