Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 185/85-14 | 245/55-17 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 26.38 (670.1) | 27.61 (701.3) | 1.23 (31.2) 4.7% |
| Width inches (mm) | 7.28 (185) | 9.65 (245) | 2.36 (60) 32.4% |
| Circum. inches (mm) | 82.88 (2105.18) | 86.74 (2203.2) | 3.86 (98.02) 4.7% |
| Sidewall Height inches (mm) | 6.19 (157.25) | 5.31 (134.75) | -0.89 (-22.5) -14.3% |
| Revolutions per mile (km) | 764.47 (475.02) | 730.46 (453.88) | -34.01 (-21.13) -4.4% |
245/55-17 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 20.93 mph (33.69 km/h) |
| 25 mph (40.23 km/h) | 26.16 mph (42.11 km/h) |
| 30 mph (48.28 km/h) | 31.4 mph (50.53 km/h) |
| 35 mph (56.33 km/h) | 36.63 mph (58.95 km/h) |
| 40 mph (64.37 km/h) | 41.86 mph (67.37 km/h) |
| 45 mph (72.42 km/h) | 47.1 mph (75.79 km/h) |
| 50 mph (80.47 km/h) | 52.33 mph (84.21 km/h) |
| 55 mph (88.51 km/h) | 57.56 mph (92.64 km/h) |
| 60 mph (96.56 km/h) | 62.79 mph (101.06 km/h) |
| 65 mph (104.61 km/h) | 68.03 mph (109.48 km/h) |
| 70 mph (112.65 km/h) | 73.26 mph (117.9 km/h) |
| 75 mph (120.7 km/h) | 78.49 mph (126.32 km/h) |
| 80 mph (128.75 km/h) | 83.72 mph (134.74 km/h) |
| 85 mph (136.79 km/h) | 88.96 mph (143.16 km/h) |
| 90 mph (144.84 km/h) | 94.19 mph (151.59 km/h) |
| 95 mph (152.89 km/h) | 99.42 mph (160.01 km/h) |
| 100 mph (160.93 km/h) | 104.66 mph (168.43 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1859 | 2159 | 2326 | 2428 | 2539 | 2618 | 2705 | 2808 | 2950 | 3093 | 3251 | 3378 | 3607 | 3860 | 4058 | 4184 | 4256 | 4517 | 4881 | 5672 |
Better Fuel Economy Factory Ratios Increased Power
