Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 175/70-12 | 175/45-12 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 21.65 (549.8) | 18.2 (462.3) | -3.44 (-87.5) -15.9% |
| Width inches (mm) | 6.89 (175) | 6.89 (175) | 0 (0) 0% |
| Circum. inches (mm) | 68 (1727.25) | 57.18 (1452.36) | -10.82 (-274.89) -15.9% |
| Sidewall Height inches (mm) | 4.82 (122.5) | 3.1 (78.75) | -1.72 (-43.75) -35.7% |
| Revolutions per mile (km) | 931.74 (578.95) | 1108.09 (688.53) | 176.35 (109.58) 18.9% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 16.82 mph (27.06 km/h) |
| 25 mph (40.23 km/h) | 21.02 mph (33.83 km/h) |
| 30 mph (48.28 km/h) | 25.23 mph (40.6 km/h) |
| 35 mph (56.33 km/h) | 29.43 mph (47.36 km/h) |
| 40 mph (64.37 km/h) | 33.63 mph (54.13 km/h) |
| 45 mph (72.42 km/h) | 37.84 mph (60.89 km/h) |
| 50 mph (80.47 km/h) | 42.04 mph (67.66 km/h) |
| 55 mph (88.51 km/h) | 46.25 mph (74.43 km/h) |
| 60 mph (96.56 km/h) | 50.45 mph (81.19 km/h) |
| 65 mph (104.61 km/h) | 54.66 mph (87.96 km/h) |
| 70 mph (112.65 km/h) | 58.86 mph (94.73 km/h) |
| 75 mph (120.7 km/h) | 63.06 mph (101.49 km/h) |
| 80 mph (128.75 km/h) | 67.27 mph (108.26 km/h) |
| 85 mph (136.79 km/h) | 71.47 mph (115.02 km/h) |
| 90 mph (144.84 km/h) | 75.68 mph (121.79 km/h) |
| 95 mph (152.89 km/h) | 79.88 mph (128.56 km/h) |
| 100 mph (160.93 km/h) | 84.09 mph (135.32 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
