Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 170/80-16 | 170/70-16 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 26.71 (678.4) | 25.37 (644.4) | -1.34 (-34) -5% |
| Width inches (mm) | 6.69 (170) | 6.69 (170) | 0 (0) 0% |
| Circum. inches (mm) | 83.91 (2131.26) | 79.7 (2024.44) | -4.21 (-106.81) -5% |
| Sidewall Height inches (mm) | 5.35 (136) | 4.69 (119) | -0.67 (-17) -12.5% |
| Revolutions per mile (km) | 755.12 (469.21) | 794.96 (493.96) | 39.84 (24.76) 5.3% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 19 mph (30.57 km/h) |
| 25 mph (40.23 km/h) | 23.75 mph (38.22 km/h) |
| 30 mph (48.28 km/h) | 28.5 mph (45.86 km/h) |
| 35 mph (56.33 km/h) | 33.25 mph (53.5 km/h) |
| 40 mph (64.37 km/h) | 38 mph (61.15 km/h) |
| 45 mph (72.42 km/h) | 42.74 mph (68.79 km/h) |
| 50 mph (80.47 km/h) | 47.49 mph (76.43 km/h) |
| 55 mph (88.51 km/h) | 52.24 mph (84.08 km/h) |
| 60 mph (96.56 km/h) | 56.99 mph (91.72 km/h) |
| 65 mph (104.61 km/h) | 61.74 mph (99.36 km/h) |
| 70 mph (112.65 km/h) | 66.49 mph (107.01 km/h) |
| 75 mph (120.7 km/h) | 71.24 mph (114.65 km/h) |
| 80 mph (128.75 km/h) | 75.99 mph (122.3 km/h) |
| 85 mph (136.79 km/h) | 80.74 mph (129.94 km/h) |
| 90 mph (144.84 km/h) | 85.49 mph (137.58 km/h) |
| 95 mph (152.89 km/h) | 90.24 mph (145.23 km/h) |
| 100 mph (160.93 km/h) | 94.99 mph (152.87 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2023 | 2350 | 2531 | 2643 | 2763 | 2849 | 2944 | 3056 | 3211 | 3366 | 3538 | 3676 | 3926 | 4201 | 4416 | 4554 | 4631 | 4915 | 5311 | 6172 |
Better Fuel Economy Factory Ratios Increased Power
