Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 185/85-14 | 205/70-15 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 26.38 (670.1) | 26.3 (668) | -0.08 (-2.1) -0.3% |
| Width inches (mm) | 7.28 (185) | 8.07 (205) | 0.79 (20) 10.8% |
| Circum. inches (mm) | 82.88 (2105.18) | 82.62 (2098.58) | -0.26 (-6.6) -0.3% |
| Sidewall Height inches (mm) | 6.19 (157.25) | 5.65 (143.5) | -0.54 (-13.75) -8.7% |
| Revolutions per mile (km) | 764.47 (475.02) | 766.87 (476.51) | 2.4 (1.49) 0.3% |
205/70-15 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 19.94 mph (32.09 km/h) |
| 25 mph (40.23 km/h) | 24.92 mph (40.11 km/h) |
| 30 mph (48.28 km/h) | 29.91 mph (48.13 km/h) |
| 35 mph (56.33 km/h) | 34.89 mph (56.15 km/h) |
| 40 mph (64.37 km/h) | 39.87 mph (64.17 km/h) |
| 45 mph (72.42 km/h) | 44.86 mph (72.19 km/h) |
| 50 mph (80.47 km/h) | 49.84 mph (80.22 km/h) |
| 55 mph (88.51 km/h) | 54.83 mph (88.24 km/h) |
| 60 mph (96.56 km/h) | 59.81 mph (96.26 km/h) |
| 65 mph (104.61 km/h) | 64.8 mph (104.28 km/h) |
| 70 mph (112.65 km/h) | 69.78 mph (112.3 km/h) |
| 75 mph (120.7 km/h) | 74.76 mph (120.32 km/h) |
| 80 mph (128.75 km/h) | 79.75 mph (128.34 km/h) |
| 85 mph (136.79 km/h) | 84.73 mph (136.37 km/h) |
| 90 mph (144.84 km/h) | 89.72 mph (144.39 km/h) |
| 95 mph (152.89 km/h) | 94.7 mph (152.41 km/h) |
| 100 mph (160.93 km/h) | 99.69 mph (160.43 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1952 | 2267 | 2442 | 2549 | 2666 | 2749 | 2840 | 2948 | 3098 | 3247 | 3413 | 3546 | 3787 | 4053 | 4260 | 4393 | 4468 | 4742 | 5124 | 5954 |
Better Fuel Economy Factory Ratios Increased Power
