Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 165/55-13 | 185/60-13 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 20.15 (511.7) | 21.74 (552.2) | 1.59 (40.5) 7.9% |
| Width inches (mm) | 6.5 (165) | 7.28 (185) | 0.79 (20) 12.1% |
| Circum. inches (mm) | 63.29 (1607.55) | 68.3 (1734.79) | 5.01 (127.23) 7.9% |
| Sidewall Height inches (mm) | 3.57 (90.75) | 4.37 (111) | 0.8 (20.25) 22.3% |
| Revolutions per mile (km) | 1001.11 (622.06) | 927.69 (576.44) | -73.42 (-45.62) -7.3% |
185/60-13 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 21.58 mph (34.73 km/h) |
| 25 mph (40.23 km/h) | 26.98 mph (43.42 km/h) |
| 30 mph (48.28 km/h) | 32.37 mph (52.1 km/h) |
| 35 mph (56.33 km/h) | 37.77 mph (60.79 km/h) |
| 40 mph (64.37 km/h) | 43.17 mph (69.47 km/h) |
| 45 mph (72.42 km/h) | 48.56 mph (78.15 km/h) |
| 50 mph (80.47 km/h) | 53.96 mph (86.84 km/h) |
| 55 mph (88.51 km/h) | 59.35 mph (95.52 km/h) |
| 60 mph (96.56 km/h) | 64.75 mph (104.2 km/h) |
| 65 mph (104.61 km/h) | 70.14 mph (112.89 km/h) |
| 70 mph (112.65 km/h) | 75.54 mph (121.57 km/h) |
| 75 mph (120.7 km/h) | 80.94 mph (130.25 km/h) |
| 80 mph (128.75 km/h) | 86.33 mph (138.94 km/h) |
| 85 mph (136.79 km/h) | 91.73 mph (147.62 km/h) |
| 90 mph (144.84 km/h) | 97.12 mph (156.31 km/h) |
| 95 mph (152.89 km/h) | 102.52 mph (164.99 km/h) |
| 100 mph (160.93 km/h) | 107.91 mph (173.67 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
