Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 185/55-13 | 205/45-13 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 21.01 (533.7) | 20.26 (514.7) | -0.75 (-19) -3.6% |
| Width inches (mm) | 7.28 (185) | 8.07 (205) | 0.79 (20) 10.8% |
| Circum. inches (mm) | 66.01 (1676.67) | 63.66 (1616.98) | -2.35 (-59.69) -3.6% |
| Sidewall Height inches (mm) | 4.01 (101.75) | 3.63 (92.25) | -0.37 (-9.5) -9.3% |
| Revolutions per mile (km) | 959.85 (596.42) | 995.28 (618.44) | 35.43 (22.02) 3.7% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 19.29 mph (31.04 km/h) |
| 25 mph (40.23 km/h) | 24.11 mph (38.8 km/h) |
| 30 mph (48.28 km/h) | 28.93 mph (46.56 km/h) |
| 35 mph (56.33 km/h) | 33.75 mph (54.32 km/h) |
| 40 mph (64.37 km/h) | 38.58 mph (62.08 km/h) |
| 45 mph (72.42 km/h) | 43.4 mph (69.84 km/h) |
| 50 mph (80.47 km/h) | 48.22 mph (77.6 km/h) |
| 55 mph (88.51 km/h) | 53.04 mph (85.36 km/h) |
| 60 mph (96.56 km/h) | 57.86 mph (93.12 km/h) |
| 65 mph (104.61 km/h) | 62.69 mph (100.88 km/h) |
| 70 mph (112.65 km/h) | 67.51 mph (108.64 km/h) |
| 75 mph (120.7 km/h) | 72.33 mph (116.4 km/h) |
| 80 mph (128.75 km/h) | 77.15 mph (124.16 km/h) |
| 85 mph (136.79 km/h) | 81.97 mph (131.92 km/h) |
| 90 mph (144.84 km/h) | 86.8 mph (139.68 km/h) |
| 95 mph (152.89 km/h) | 91.62 mph (147.45 km/h) |
| 100 mph (160.93 km/h) | 96.44 mph (155.21 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
