Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 170/65-16 | 200/65-18 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 24.7 (627.4) | 28.24 (717.2) | 3.54 (89.8) 14.3% |
| Width inches (mm) | 6.69 (170) | 7.87 (200) | 1.18 (30) 17.6% |
| Circum. inches (mm) | 77.6 (1971.04) | 88.71 (2253.15) | 11.11 (282.12) 14.3% |
| Sidewall Height inches (mm) | 4.35 (110.5) | 5.12 (130) | 0.77 (19.5) 17.6% |
| Revolutions per mile (km) | 816.5 (507.35) | 714.26 (443.82) | -102.23 (-63.52) -12.5% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 22.86 mph (36.79 km/h) |
| 25 mph (40.23 km/h) | 28.58 mph (45.99 km/h) |
| 30 mph (48.28 km/h) | 34.29 mph (55.19 km/h) |
| 35 mph (56.33 km/h) | 40.01 mph (64.39 km/h) |
| 40 mph (64.37 km/h) | 45.73 mph (73.59 km/h) |
| 45 mph (72.42 km/h) | 51.44 mph (82.79 km/h) |
| 50 mph (80.47 km/h) | 57.16 mph (91.98 km/h) |
| 55 mph (88.51 km/h) | 62.87 mph (101.18 km/h) |
| 60 mph (96.56 km/h) | 68.59 mph (110.38 km/h) |
| 65 mph (104.61 km/h) | 74.3 mph (119.58 km/h) |
| 70 mph (112.65 km/h) | 80.02 mph (128.78 km/h) |
| 75 mph (120.7 km/h) | 85.73 mph (137.98 km/h) |
| 80 mph (128.75 km/h) | 91.45 mph (147.18 km/h) |
| 85 mph (136.79 km/h) | 97.17 mph (156.37 km/h) |
| 90 mph (144.84 km/h) | 102.88 mph (165.57 km/h) |
| 95 mph (152.89 km/h) | 108.6 mph (174.77 km/h) |
| 100 mph (160.93 km/h) | 114.31 mph (183.97 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1818 | 2112 | 2274 | 2375 | 2483 | 2560 | 2645 | 2746 | 2885 | 3024 | 3179 | 3303 | 3527 | 3775 | 3968 | 4092 | 4161 | 4417 | 4772 | 5546 |
Better Fuel Economy Factory Ratios Increased Power
