Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 170/55-17 | 170/50-17 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 24.36 (618.8) | 23.69 (601.8) | -0.67 (-17) -2.7% |
| Width inches (mm) | 6.69 (170) | 6.69 (170) | 0 (0) 0% |
| Circum. inches (mm) | 76.54 (1944.02) | 74.43 (1890.61) | -2.1 (-53.41) -2.7% |
| Sidewall Height inches (mm) | 3.68 (93.5) | 3.35 (85) | -0.33 (-8.5) -9.1% |
| Revolutions per mile (km) | 827.84 (514.4) | 851.23 (528.93) | 23.39 (14.53) 2.8% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 19.45 mph (31.3 km/h) |
| 25 mph (40.23 km/h) | 24.31 mph (39.13 km/h) |
| 30 mph (48.28 km/h) | 29.18 mph (46.95 km/h) |
| 35 mph (56.33 km/h) | 34.04 mph (54.78 km/h) |
| 40 mph (64.37 km/h) | 38.9 mph (62.61 km/h) |
| 45 mph (72.42 km/h) | 43.76 mph (70.43 km/h) |
| 50 mph (80.47 km/h) | 48.63 mph (78.26 km/h) |
| 55 mph (88.51 km/h) | 53.49 mph (86.08 km/h) |
| 60 mph (96.56 km/h) | 58.35 mph (93.91 km/h) |
| 65 mph (104.61 km/h) | 63.21 mph (101.73 km/h) |
| 70 mph (112.65 km/h) | 68.08 mph (109.56 km/h) |
| 75 mph (120.7 km/h) | 72.94 mph (117.39 km/h) |
| 80 mph (128.75 km/h) | 77.8 mph (125.21 km/h) |
| 85 mph (136.79 km/h) | 82.66 mph (133.04 km/h) |
| 90 mph (144.84 km/h) | 87.53 mph (140.86 km/h) |
| 95 mph (152.89 km/h) | 92.39 mph (148.69 km/h) |
| 100 mph (160.93 km/h) | 97.25 mph (156.51 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2166 | 2516 | 2710 | 2830 | 2959 | 3051 | 3153 | 3272 | 3438 | 3604 | 3789 | 3936 | 4203 | 4498 | 4729 | 4876 | 4959 | 5263 | 5687 | 6609 |
Better Fuel Economy Factory Ratios Increased Power
