Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 170/80-16 | 170/80-15 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 26.71 (678.4) | 25.71 (653) | -1 (-25.4) -3.7% |
| Width inches (mm) | 6.69 (170) | 6.69 (170) | 0 (0) 0% |
| Circum. inches (mm) | 83.91 (2131.26) | 80.77 (2051.46) | -3.14 (-79.8) -3.7% |
| Sidewall Height inches (mm) | 5.35 (136) | 5.35 (136) | 0 (0) 0% |
| Revolutions per mile (km) | 755.12 (469.21) | 784.49 (487.46) | 29.37 (18.25) 3.9% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 19.25 mph (30.98 km/h) |
| 25 mph (40.23 km/h) | 24.06 mph (38.73 km/h) |
| 30 mph (48.28 km/h) | 28.88 mph (46.47 km/h) |
| 35 mph (56.33 km/h) | 33.69 mph (54.22 km/h) |
| 40 mph (64.37 km/h) | 38.5 mph (61.96 km/h) |
| 45 mph (72.42 km/h) | 43.32 mph (69.71 km/h) |
| 50 mph (80.47 km/h) | 48.13 mph (77.45 km/h) |
| 55 mph (88.51 km/h) | 52.94 mph (85.2 km/h) |
| 60 mph (96.56 km/h) | 57.75 mph (92.95 km/h) |
| 65 mph (104.61 km/h) | 62.57 mph (100.69 km/h) |
| 70 mph (112.65 km/h) | 67.38 mph (108.44 km/h) |
| 75 mph (120.7 km/h) | 72.19 mph (116.18 km/h) |
| 80 mph (128.75 km/h) | 77 mph (123.93 km/h) |
| 85 mph (136.79 km/h) | 81.82 mph (131.67 km/h) |
| 90 mph (144.84 km/h) | 86.63 mph (139.42 km/h) |
| 95 mph (152.89 km/h) | 91.44 mph (147.16 km/h) |
| 100 mph (160.93 km/h) | 96.26 mph (154.91 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1996 | 2319 | 2498 | 2608 | 2727 | 2812 | 2905 | 3016 | 3169 | 3322 | 3492 | 3627 | 3874 | 4146 | 4358 | 4494 | 4570 | 4851 | 5242 | 6091 |
Better Fuel Economy Factory Ratios Increased Power
