Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 185/75-13 | 170/75-13 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 23.93 (607.7) | 23.04 (585.2) | -0.89 (-22.5) -3.7% |
| Width inches (mm) | 7.28 (185) | 6.69 (170) | -0.59 (-15) -8.1% |
| Circum. inches (mm) | 75.16 (1909.15) | 72.38 (1838.46) | -2.78 (-70.69) -3.7% |
| Sidewall Height inches (mm) | 5.46 (138.75) | 5.02 (127.5) | -0.44 (-11.25) -8.1% |
| Revolutions per mile (km) | 842.97 (523.79) | 875.38 (543.93) | 32.41 (20.14) 3.8% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 19.26 mph (31 km/h) |
| 25 mph (40.23 km/h) | 24.07 mph (38.74 km/h) |
| 30 mph (48.28 km/h) | 28.89 mph (46.49 km/h) |
| 35 mph (56.33 km/h) | 33.7 mph (54.24 km/h) |
| 40 mph (64.37 km/h) | 38.52 mph (61.99 km/h) |
| 45 mph (72.42 km/h) | 43.33 mph (69.74 km/h) |
| 50 mph (80.47 km/h) | 48.15 mph (77.49 km/h) |
| 55 mph (88.51 km/h) | 52.96 mph (85.24 km/h) |
| 60 mph (96.56 km/h) | 57.78 mph (92.99 km/h) |
| 65 mph (104.61 km/h) | 62.59 mph (100.73 km/h) |
| 70 mph (112.65 km/h) | 67.41 mph (108.48 km/h) |
| 75 mph (120.7 km/h) | 72.22 mph (116.23 km/h) |
| 80 mph (128.75 km/h) | 77.04 mph (123.98 km/h) |
| 85 mph (136.79 km/h) | 81.85 mph (131.73 km/h) |
| 90 mph (144.84 km/h) | 86.67 mph (139.48 km/h) |
| 95 mph (152.89 km/h) | 91.48 mph (147.23 km/h) |
| 100 mph (160.93 km/h) | 96.3 mph (154.98 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2228 | 2588 | 2787 | 2910 | 3043 | 3138 | 3242 | 3365 | 3536 | 3706 | 3896 | 4048 | 4323 | 4626 | 4863 | 5015 | 5100 | 5413 | 5849 | 6797 |
Better Fuel Economy Factory Ratios Increased Power
