Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 175/45-15 | 170/55-16 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 21.2 (538.5) | 23.36 (593.4) | 2.16 (54.9) 10.2% |
| Width inches (mm) | 6.89 (175) | 6.69 (170) | -0.2 (-5) -2.9% |
| Circum. inches (mm) | 66.6 (1691.75) | 73.39 (1864.22) | 6.79 (172.47) 10.2% |
| Sidewall Height inches (mm) | 3.1 (78.75) | 3.68 (93.5) | 0.58 (14.75) 18.7% |
| Revolutions per mile (km) | 951.29 (591.1) | 863.28 (536.42) | -88.01 (-54.69) -9.3% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 22.04 mph (35.47 km/h) |
| 25 mph (40.23 km/h) | 27.55 mph (44.34 km/h) |
| 30 mph (48.28 km/h) | 33.06 mph (53.2 km/h) |
| 35 mph (56.33 km/h) | 38.57 mph (62.07 km/h) |
| 40 mph (64.37 km/h) | 44.08 mph (70.94 km/h) |
| 45 mph (72.42 km/h) | 49.59 mph (79.8 km/h) |
| 50 mph (80.47 km/h) | 55.1 mph (88.67 km/h) |
| 55 mph (88.51 km/h) | 60.61 mph (97.54 km/h) |
| 60 mph (96.56 km/h) | 66.12 mph (106.41 km/h) |
| 65 mph (104.61 km/h) | 71.63 mph (115.27 km/h) |
| 70 mph (112.65 km/h) | 77.14 mph (124.14 km/h) |
| 75 mph (120.7 km/h) | 82.65 mph (133.01 km/h) |
| 80 mph (128.75 km/h) | 88.16 mph (141.87 km/h) |
| 85 mph (136.79 km/h) | 93.67 mph (150.74 km/h) |
| 90 mph (144.84 km/h) | 99.18 mph (159.61 km/h) |
| 95 mph (152.89 km/h) | 104.69 mph (168.47 km/h) |
| 100 mph (160.93 km/h) | 110.19 mph (177.34 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2197 | 2552 | 2748 | 2870 | 3001 | 3094 | 3197 | 3319 | 3487 | 3655 | 3842 | 3992 | 4263 | 4562 | 4796 | 4945 | 5029 | 5338 | 5768 | 6703 |
Better Fuel Economy Factory Ratios Increased Power
