Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 180/50-17 | 180/40-17 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 24.09 (611.8) | 22.67 (575.8) | -1.42 (-36) -5.9% |
| Width inches (mm) | 7.09 (180) | 7.09 (180) | 0 (0) 0% |
| Circum. inches (mm) | 75.67 (1922.03) | 71.22 (1808.93) | -4.45 (-113.1) -5.9% |
| Sidewall Height inches (mm) | 3.54 (90) | 2.83 (72) | -0.71 (-18) -20% |
| Revolutions per mile (km) | 837.32 (520.28) | 889.67 (552.81) | 52.35 (32.53) 6.3% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 18.82 mph (30.29 km/h) |
| 25 mph (40.23 km/h) | 23.53 mph (37.87 km/h) |
| 30 mph (48.28 km/h) | 28.23 mph (45.44 km/h) |
| 35 mph (56.33 km/h) | 32.94 mph (53.01 km/h) |
| 40 mph (64.37 km/h) | 37.65 mph (60.59 km/h) |
| 45 mph (72.42 km/h) | 42.35 mph (68.16 km/h) |
| 50 mph (80.47 km/h) | 47.06 mph (75.73 km/h) |
| 55 mph (88.51 km/h) | 51.76 mph (83.31 km/h) |
| 60 mph (96.56 km/h) | 56.47 mph (90.88 km/h) |
| 65 mph (104.61 km/h) | 61.18 mph (98.45 km/h) |
| 70 mph (112.65 km/h) | 65.88 mph (106.03 km/h) |
| 75 mph (120.7 km/h) | 70.59 mph (113.6 km/h) |
| 80 mph (128.75 km/h) | 75.29 mph (121.17 km/h) |
| 85 mph (136.79 km/h) | 80 mph (128.75 km/h) |
| 90 mph (144.84 km/h) | 84.7 mph (136.32 km/h) |
| 95 mph (152.89 km/h) | 89.41 mph (143.89 km/h) |
| 100 mph (160.93 km/h) | 94.12 mph (151.46 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2264 | 2630 | 2832 | 2958 | 3093 | 3189 | 3295 | 3420 | 3594 | 3767 | 3960 | 4114 | 4393 | 4701 | 4942 | 5096 | 5183 | 5501 | 5944 | 6908 |
Better Fuel Economy Factory Ratios Increased Power
