Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 180/80-14 | 205/50-15 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 25.34 (643.6) | 23.07 (586) | -2.27 (-57.6) -8.9% |
| Width inches (mm) | 7.09 (180) | 8.07 (205) | 0.98 (25) 13.9% |
| Circum. inches (mm) | 79.6 (2021.93) | 72.48 (1840.97) | -7.12 (-180.96) -8.9% |
| Sidewall Height inches (mm) | 5.67 (144) | 4.04 (102.5) | -1.63 (-41.5) -28.8% |
| Revolutions per mile (km) | 795.94 (494.58) | 874.18 (543.19) | 78.24 (48.61) 9.8% |
205/50-15 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 18.21 mph (29.31 km/h) |
| 25 mph (40.23 km/h) | 22.76 mph (36.63 km/h) |
| 30 mph (48.28 km/h) | 27.32 mph (43.96 km/h) |
| 35 mph (56.33 km/h) | 31.87 mph (51.29 km/h) |
| 40 mph (64.37 km/h) | 36.42 mph (58.61 km/h) |
| 45 mph (72.42 km/h) | 40.97 mph (65.94 km/h) |
| 50 mph (80.47 km/h) | 45.53 mph (73.27 km/h) |
| 55 mph (88.51 km/h) | 50.08 mph (80.59 km/h) |
| 60 mph (96.56 km/h) | 54.63 mph (87.92 km/h) |
| 65 mph (104.61 km/h) | 59.18 mph (95.25 km/h) |
| 70 mph (112.65 km/h) | 63.74 mph (102.57 km/h) |
| 75 mph (120.7 km/h) | 68.29 mph (109.9 km/h) |
| 80 mph (128.75 km/h) | 72.84 mph (117.23 km/h) |
| 85 mph (136.79 km/h) | 77.39 mph (124.55 km/h) |
| 90 mph (144.84 km/h) | 81.95 mph (131.88 km/h) |
| 95 mph (152.89 km/h) | 86.5 mph (139.21 km/h) |
| 100 mph (160.93 km/h) | 91.05 mph (146.53 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2225 | 2584 | 2783 | 2906 | 3039 | 3133 | 3238 | 3361 | 3531 | 3701 | 3891 | 4042 | 4317 | 4620 | 4856 | 5008 | 5093 | 5405 | 5841 | 6787 |
Better Fuel Economy Factory Ratios Increased Power
