Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 155/70-12 | 185/60-12 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 20.54 (521.8) | 20.74 (526.8) | 0.2 (5) 1% |
| Width inches (mm) | 6.1 (155) | 7.28 (185) | 1.18 (30) 19.4% |
| Circum. inches (mm) | 64.54 (1639.28) | 65.16 (1654.99) | 0.62 (15.71) 1% |
| Sidewall Height inches (mm) | 4.27 (108.5) | 4.37 (111) | 0.1 (2.5) 2.3% |
| Revolutions per mile (km) | 981.74 (610.02) | 972.42 (604.23) | -9.32 (-5.79) -0.9% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 20.19 mph (32.5 km/h) |
| 25 mph (40.23 km/h) | 25.24 mph (40.62 km/h) |
| 30 mph (48.28 km/h) | 30.29 mph (48.74 km/h) |
| 35 mph (56.33 km/h) | 35.34 mph (56.87 km/h) |
| 40 mph (64.37 km/h) | 40.38 mph (64.99 km/h) |
| 45 mph (72.42 km/h) | 45.43 mph (73.11 km/h) |
| 50 mph (80.47 km/h) | 50.48 mph (81.24 km/h) |
| 55 mph (88.51 km/h) | 55.53 mph (89.36 km/h) |
| 60 mph (96.56 km/h) | 60.57 mph (97.49 km/h) |
| 65 mph (104.61 km/h) | 65.62 mph (105.61 km/h) |
| 70 mph (112.65 km/h) | 70.67 mph (113.73 km/h) |
| 75 mph (120.7 km/h) | 75.72 mph (121.86 km/h) |
| 80 mph (128.75 km/h) | 80.77 mph (129.98 km/h) |
| 85 mph (136.79 km/h) | 85.81 mph (138.11 km/h) |
| 90 mph (144.84 km/h) | 90.86 mph (146.23 km/h) |
| 95 mph (152.89 km/h) | 95.91 mph (154.35 km/h) |
| 100 mph (160.93 km/h) | 100.96 mph (162.48 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
