Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 180/70-15 | 175/75-15 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 24.92 (633) | 25.33 (643.5) | 0.41 (10.5) 1.7% |
| Width inches (mm) | 7.09 (180) | 6.89 (175) | -0.2 (-5) -2.8% |
| Circum. inches (mm) | 78.29 (1988.63) | 79.59 (2021.61) | 1.3 (32.99) 1.7% |
| Sidewall Height inches (mm) | 4.96 (126) | 5.17 (131.25) | 0.21 (5.25) 4.2% |
| Revolutions per mile (km) | 809.27 (502.86) | 796.07 (494.65) | -13.2 (-8.21) -1.6% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 20.33 mph (32.72 km/h) |
| 25 mph (40.23 km/h) | 25.41 mph (40.9 km/h) |
| 30 mph (48.28 km/h) | 30.5 mph (49.08 km/h) |
| 35 mph (56.33 km/h) | 35.58 mph (57.26 km/h) |
| 40 mph (64.37 km/h) | 40.66 mph (65.44 km/h) |
| 45 mph (72.42 km/h) | 45.75 mph (73.62 km/h) |
| 50 mph (80.47 km/h) | 50.83 mph (81.8 km/h) |
| 55 mph (88.51 km/h) | 55.91 mph (89.98 km/h) |
| 60 mph (96.56 km/h) | 61 mph (98.16 km/h) |
| 65 mph (104.61 km/h) | 66.08 mph (106.34 km/h) |
| 70 mph (112.65 km/h) | 71.16 mph (114.52 km/h) |
| 75 mph (120.7 km/h) | 76.24 mph (122.7 km/h) |
| 80 mph (128.75 km/h) | 81.33 mph (130.88 km/h) |
| 85 mph (136.79 km/h) | 86.41 mph (139.06 km/h) |
| 90 mph (144.84 km/h) | 91.49 mph (147.24 km/h) |
| 95 mph (152.89 km/h) | 96.58 mph (155.42 km/h) |
| 100 mph (160.93 km/h) | 101.66 mph (163.6 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2026 | 2353 | 2534 | 2647 | 2767 | 2853 | 2948 | 3060 | 3215 | 3371 | 3543 | 3681 | 3931 | 4207 | 4422 | 4560 | 4638 | 4922 | 5319 | 6181 |
Better Fuel Economy Factory Ratios Increased Power
