Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 180/55-17 | 190/50-17 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 24.8 (629.8) | 24.48 (621.8) | -0.31 (-8) -1.3% |
| Width inches (mm) | 7.09 (180) | 7.48 (190) | 0.39 (10) 5.6% |
| Circum. inches (mm) | 77.9 (1978.58) | 76.91 (1953.44) | -0.99 (-25.13) -1.3% |
| Sidewall Height inches (mm) | 3.9 (99) | 3.74 (95) | -0.16 (-4) -4% |
| Revolutions per mile (km) | 813.39 (505.41) | 823.85 (511.92) | 10.46 (6.5) 1.3% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 19.75 mph (31.78 km/h) |
| 25 mph (40.23 km/h) | 24.68 mph (39.72 km/h) |
| 30 mph (48.28 km/h) | 29.62 mph (47.67 km/h) |
| 35 mph (56.33 km/h) | 34.56 mph (55.61 km/h) |
| 40 mph (64.37 km/h) | 39.49 mph (63.56 km/h) |
| 45 mph (72.42 km/h) | 44.43 mph (71.5 km/h) |
| 50 mph (80.47 km/h) | 49.36 mph (79.45 km/h) |
| 55 mph (88.51 km/h) | 54.3 mph (87.39 km/h) |
| 60 mph (96.56 km/h) | 59.24 mph (95.33 km/h) |
| 65 mph (104.61 km/h) | 64.17 mph (103.28 km/h) |
| 70 mph (112.65 km/h) | 69.11 mph (111.22 km/h) |
| 75 mph (120.7 km/h) | 74.05 mph (119.17 km/h) |
| 80 mph (128.75 km/h) | 78.98 mph (127.11 km/h) |
| 85 mph (136.79 km/h) | 83.92 mph (135.06 km/h) |
| 90 mph (144.84 km/h) | 88.86 mph (143 km/h) |
| 95 mph (152.89 km/h) | 93.79 mph (150.95 km/h) |
| 100 mph (160.93 km/h) | 98.73 mph (158.89 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2097 | 2436 | 2623 | 2739 | 2864 | 2953 | 3051 | 3167 | 3328 | 3488 | 3667 | 3809 | 4068 | 4354 | 4577 | 4719 | 4800 | 5094 | 5505 | 6397 |
Better Fuel Economy Factory Ratios Increased Power
