Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 175/70-12 | 185/60-13 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 21.65 (549.8) | 21.74 (552.2) | 0.09 (2.4) 0.4% |
| Width inches (mm) | 6.89 (175) | 7.28 (185) | 0.39 (10) 5.7% |
| Circum. inches (mm) | 68 (1727.25) | 68.3 (1734.79) | 0.3 (7.54) 0.4% |
| Sidewall Height inches (mm) | 4.82 (122.5) | 4.37 (111) | -0.45 (-11.5) -9.4% |
| Revolutions per mile (km) | 931.74 (578.95) | 927.69 (576.44) | -4.05 (-2.52) -0.4% |
185/60-13 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 20.09 mph (32.33 km/h) |
| 25 mph (40.23 km/h) | 25.11 mph (40.41 km/h) |
| 30 mph (48.28 km/h) | 30.13 mph (48.49 km/h) |
| 35 mph (56.33 km/h) | 35.15 mph (56.57 km/h) |
| 40 mph (64.37 km/h) | 40.17 mph (64.65 km/h) |
| 45 mph (72.42 km/h) | 45.2 mph (72.74 km/h) |
| 50 mph (80.47 km/h) | 50.22 mph (80.82 km/h) |
| 55 mph (88.51 km/h) | 55.24 mph (88.9 km/h) |
| 60 mph (96.56 km/h) | 60.26 mph (96.98 km/h) |
| 65 mph (104.61 km/h) | 65.28 mph (105.06 km/h) |
| 70 mph (112.65 km/h) | 70.31 mph (113.15 km/h) |
| 75 mph (120.7 km/h) | 75.33 mph (121.23 km/h) |
| 80 mph (128.75 km/h) | 80.35 mph (129.31 km/h) |
| 85 mph (136.79 km/h) | 85.37 mph (137.39 km/h) |
| 90 mph (144.84 km/h) | 90.39 mph (145.47 km/h) |
| 95 mph (152.89 km/h) | 95.41 mph (153.56 km/h) |
| 100 mph (160.93 km/h) | 100.44 mph (161.64 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
