Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 145/70-12 | 165/70-12 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 19.99 (507.8) | 21.09 (535.8) | 1.1 (28) 5.5% |
| Width inches (mm) | 5.71 (145) | 6.5 (165) | 0.79 (20) 13.8% |
| Circum. inches (mm) | 62.81 (1595.3) | 66.27 (1683.27) | 3.46 (87.96) 5.5% |
| Sidewall Height inches (mm) | 4 (101.5) | 4.55 (115.5) | 0.55 (14) 13.8% |
| Revolutions per mile (km) | 1008.8 (626.84) | 956.08 (594.08) | -52.72 (-32.76) -5.2% |
165/70-12 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 21.1 mph (33.96 km/h) |
| 25 mph (40.23 km/h) | 26.38 mph (42.45 km/h) |
| 30 mph (48.28 km/h) | 31.65 mph (50.94 km/h) |
| 35 mph (56.33 km/h) | 36.93 mph (59.43 km/h) |
| 40 mph (64.37 km/h) | 42.21 mph (67.92 km/h) |
| 45 mph (72.42 km/h) | 47.48 mph (76.41 km/h) |
| 50 mph (80.47 km/h) | 52.76 mph (84.9 km/h) |
| 55 mph (88.51 km/h) | 58.03 mph (93.39 km/h) |
| 60 mph (96.56 km/h) | 63.31 mph (101.89 km/h) |
| 65 mph (104.61 km/h) | 68.58 mph (110.38 km/h) |
| 70 mph (112.65 km/h) | 73.86 mph (118.87 km/h) |
| 75 mph (120.7 km/h) | 79.14 mph (127.36 km/h) |
| 80 mph (128.75 km/h) | 84.41 mph (135.85 km/h) |
| 85 mph (136.79 km/h) | 89.69 mph (144.34 km/h) |
| 90 mph (144.84 km/h) | 94.96 mph (152.83 km/h) |
| 95 mph (152.89 km/h) | 100.24 mph (161.32 km/h) |
| 100 mph (160.93 km/h) | 105.51 mph (169.81 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
