Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 170/65-16 | 200/55-18 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 24.7 (627.4) | 26.66 (677.2) | 1.96 (49.8) 7.9% |
| Width inches (mm) | 6.69 (170) | 7.87 (200) | 1.18 (30) 17.6% |
| Circum. inches (mm) | 77.6 (1971.04) | 83.76 (2127.49) | 6.16 (156.45) 7.9% |
| Sidewall Height inches (mm) | 4.35 (110.5) | 4.33 (110) | -0.02 (-0.5) -0.5% |
| Revolutions per mile (km) | 816.5 (507.35) | 756.45 (470.04) | -60.04 (-37.31) -7.4% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 21.59 mph (34.74 km/h) |
| 25 mph (40.23 km/h) | 26.98 mph (43.43 km/h) |
| 30 mph (48.28 km/h) | 32.38 mph (52.11 km/h) |
| 35 mph (56.33 km/h) | 37.78 mph (60.8 km/h) |
| 40 mph (64.37 km/h) | 43.18 mph (69.48 km/h) |
| 45 mph (72.42 km/h) | 48.57 mph (78.17 km/h) |
| 50 mph (80.47 km/h) | 53.97 mph (86.85 km/h) |
| 55 mph (88.51 km/h) | 59.37 mph (95.54 km/h) |
| 60 mph (96.56 km/h) | 64.76 mph (104.23 km/h) |
| 65 mph (104.61 km/h) | 70.16 mph (112.91 km/h) |
| 70 mph (112.65 km/h) | 75.56 mph (121.6 km/h) |
| 75 mph (120.7 km/h) | 80.95 mph (130.28 km/h) |
| 80 mph (128.75 km/h) | 86.35 mph (138.97 km/h) |
| 85 mph (136.79 km/h) | 91.75 mph (147.65 km/h) |
| 90 mph (144.84 km/h) | 97.14 mph (156.34 km/h) |
| 95 mph (152.89 km/h) | 102.54 mph (165.02 km/h) |
| 100 mph (160.93 km/h) | 107.94 mph (173.71 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1925 | 2236 | 2408 | 2515 | 2630 | 2711 | 2802 | 2908 | 3055 | 3203 | 3367 | 3498 | 3735 | 3998 | 4202 | 4333 | 4407 | 4677 | 5054 | 5873 |
Better Fuel Economy Factory Ratios Increased Power
