Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 185/75-16 | 205/85-15 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 26.93 (683.9) | 28.72 (729.5) | 1.8 (45.6) 6.7% |
| Width inches (mm) | 7.28 (185) | 8.07 (205) | 0.79 (20) 10.8% |
| Circum. inches (mm) | 84.59 (2148.54) | 90.23 (2291.79) | 5.64 (143.26) 6.7% |
| Sidewall Height inches (mm) | 5.46 (138.75) | 6.86 (174.25) | 1.4 (35.5) 25.6% |
| Revolutions per mile (km) | 749.04 (465.43) | 702.22 (436.34) | -46.82 (-29.09) -6.3% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 21.33 mph (34.33 km/h) |
| 25 mph (40.23 km/h) | 26.67 mph (42.92 km/h) |
| 30 mph (48.28 km/h) | 32 mph (51.5 km/h) |
| 35 mph (56.33 km/h) | 37.33 mph (60.08 km/h) |
| 40 mph (64.37 km/h) | 42.67 mph (68.67 km/h) |
| 45 mph (72.42 km/h) | 48 mph (77.25 km/h) |
| 50 mph (80.47 km/h) | 53.33 mph (85.83 km/h) |
| 55 mph (88.51 km/h) | 58.67 mph (94.42 km/h) |
| 60 mph (96.56 km/h) | 64 mph (103 km/h) |
| 65 mph (104.61 km/h) | 69.33 mph (111.58 km/h) |
| 70 mph (112.65 km/h) | 74.67 mph (120.17 km/h) |
| 75 mph (120.7 km/h) | 80 mph (128.75 km/h) |
| 80 mph (128.75 km/h) | 85.33 mph (137.33 km/h) |
| 85 mph (136.79 km/h) | 90.67 mph (145.92 km/h) |
| 90 mph (144.84 km/h) | 96 mph (154.5 km/h) |
| 95 mph (152.89 km/h) | 101.33 mph (163.08 km/h) |
| 100 mph (160.93 km/h) | 106.67 mph (171.67 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1787 | 2076 | 2236 | 2335 | 2441 | 2517 | 2601 | 2700 | 2836 | 2973 | 3125 | 3247 | 3468 | 3711 | 3901 | 4023 | 4091 | 4342 | 4692 | 5452 |
Better Fuel Economy Factory Ratios Increased Power
