Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 170/70-16 | 185/65-16 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 25.37 (644.4) | 25.47 (646.9) | 0.1 (2.5) 0.4% |
| Width inches (mm) | 6.69 (170) | 7.28 (185) | 0.59 (15) 8.8% |
| Circum. inches (mm) | 79.7 (2024.44) | 80.01 (2032.3) | 0.31 (7.85) 0.4% |
| Sidewall Height inches (mm) | 4.69 (119) | 4.73 (120.25) | 0.05 (1.25) 1.1% |
| Revolutions per mile (km) | 794.96 (493.96) | 791.88 (492.05) | -3.07 (-1.91) -0.4% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 20.08 mph (32.31 km/h) |
| 25 mph (40.23 km/h) | 25.1 mph (40.39 km/h) |
| 30 mph (48.28 km/h) | 30.12 mph (48.47 km/h) |
| 35 mph (56.33 km/h) | 35.14 mph (56.55 km/h) |
| 40 mph (64.37 km/h) | 40.16 mph (64.62 km/h) |
| 45 mph (72.42 km/h) | 45.17 mph (72.7 km/h) |
| 50 mph (80.47 km/h) | 50.19 mph (80.78 km/h) |
| 55 mph (88.51 km/h) | 55.21 mph (88.86 km/h) |
| 60 mph (96.56 km/h) | 60.23 mph (96.94 km/h) |
| 65 mph (104.61 km/h) | 65.25 mph (105.01 km/h) |
| 70 mph (112.65 km/h) | 70.27 mph (113.09 km/h) |
| 75 mph (120.7 km/h) | 75.29 mph (121.17 km/h) |
| 80 mph (128.75 km/h) | 80.31 mph (129.25 km/h) |
| 85 mph (136.79 km/h) | 85.33 mph (137.33 km/h) |
| 90 mph (144.84 km/h) | 90.35 mph (145.4 km/h) |
| 95 mph (152.89 km/h) | 95.37 mph (153.48 km/h) |
| 100 mph (160.93 km/h) | 100.39 mph (161.56 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2015 | 2341 | 2521 | 2633 | 2753 | 2838 | 2933 | 3044 | 3199 | 3353 | 3524 | 3662 | 3910 | 4185 | 4399 | 4536 | 4614 | 4896 | 5291 | 6148 |
Better Fuel Economy Factory Ratios Increased Power
