Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 170/80-15 | 205/70-15 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 25.71 (653) | 26.3 (668) | 0.59 (15) 2.3% |
| Width inches (mm) | 6.69 (170) | 8.07 (205) | 1.38 (35) 20.6% |
| Circum. inches (mm) | 80.77 (2051.46) | 82.62 (2098.58) | 1.86 (47.12) 2.3% |
| Sidewall Height inches (mm) | 5.35 (136) | 5.65 (143.5) | 0.3 (7.5) 5.5% |
| Revolutions per mile (km) | 784.49 (487.46) | 766.87 (476.51) | -17.62 (-10.95) -2.2% |
205/70-15 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 20.46 mph (32.93 km/h) |
| 25 mph (40.23 km/h) | 25.57 mph (41.16 km/h) |
| 30 mph (48.28 km/h) | 30.69 mph (49.39 km/h) |
| 35 mph (56.33 km/h) | 35.8 mph (57.62 km/h) |
| 40 mph (64.37 km/h) | 40.92 mph (65.85 km/h) |
| 45 mph (72.42 km/h) | 46.03 mph (74.08 km/h) |
| 50 mph (80.47 km/h) | 51.15 mph (82.32 km/h) |
| 55 mph (88.51 km/h) | 56.26 mph (90.55 km/h) |
| 60 mph (96.56 km/h) | 61.38 mph (98.78 km/h) |
| 65 mph (104.61 km/h) | 66.49 mph (107.01 km/h) |
| 70 mph (112.65 km/h) | 71.61 mph (115.24 km/h) |
| 75 mph (120.7 km/h) | 76.72 mph (123.47 km/h) |
| 80 mph (128.75 km/h) | 81.84 mph (131.71 km/h) |
| 85 mph (136.79 km/h) | 86.95 mph (139.94 km/h) |
| 90 mph (144.84 km/h) | 92.07 mph (148.17 km/h) |
| 95 mph (152.89 km/h) | 97.18 mph (156.4 km/h) |
| 100 mph (160.93 km/h) | 102.3 mph (164.63 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
