Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 200/55-18 | 180/70-15 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 26.66 (677.2) | 24.92 (633) | -1.74 (-44.2) -6.5% |
| Width inches (mm) | 7.87 (200) | 7.09 (180) | -0.79 (-20) -10% |
| Circum. inches (mm) | 83.76 (2127.49) | 78.29 (1988.63) | -5.47 (-138.86) -6.5% |
| Sidewall Height inches (mm) | 4.33 (110) | 4.96 (126) | 0.63 (16) 14.5% |
| Revolutions per mile (km) | 756.45 (470.04) | 809.27 (502.86) | 52.82 (32.82) 7% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 18.69 mph (30.09 km/h) |
| 25 mph (40.23 km/h) | 23.37 mph (37.61 km/h) |
| 30 mph (48.28 km/h) | 28.04 mph (45.13 km/h) |
| 35 mph (56.33 km/h) | 32.72 mph (52.65 km/h) |
| 40 mph (64.37 km/h) | 37.39 mph (60.17 km/h) |
| 45 mph (72.42 km/h) | 42.06 mph (67.69 km/h) |
| 50 mph (80.47 km/h) | 46.74 mph (75.22 km/h) |
| 55 mph (88.51 km/h) | 51.41 mph (82.74 km/h) |
| 60 mph (96.56 km/h) | 56.08 mph (90.26 km/h) |
| 65 mph (104.61 km/h) | 60.76 mph (97.78 km/h) |
| 70 mph (112.65 km/h) | 65.43 mph (105.3 km/h) |
| 75 mph (120.7 km/h) | 70.1 mph (112.82 km/h) |
| 80 mph (128.75 km/h) | 74.78 mph (120.34 km/h) |
| 85 mph (136.79 km/h) | 79.45 mph (127.87 km/h) |
| 90 mph (144.84 km/h) | 84.13 mph (135.39 km/h) |
| 95 mph (152.89 km/h) | 88.8 mph (142.91 km/h) |
| 100 mph (160.93 km/h) | 93.47 mph (150.43 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2059 | 2392 | 2576 | 2690 | 2813 | 2901 | 2997 | 3111 | 3269 | 3427 | 3602 | 3742 | 3996 | 4277 | 4496 | 4636 | 4715 | 5004 | 5407 | 6284 |
Better Fuel Economy Factory Ratios Increased Power
