Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 170/65-16 | 200/40-18 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 24.7 (627.4) | 24.3 (617.2) | -0.4 (-10.2) -1.6% |
| Width inches (mm) | 6.69 (170) | 7.87 (200) | 1.18 (30) 17.6% |
| Circum. inches (mm) | 77.6 (1971.04) | 76.34 (1938.99) | -1.26 (-32.04) -1.6% |
| Sidewall Height inches (mm) | 4.35 (110.5) | 3.15 (80) | -1.2 (-30.5) -27.6% |
| Revolutions per mile (km) | 816.5 (507.35) | 829.99 (515.73) | 13.49 (8.38) 1.7% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 19.67 mph (31.66 km/h) |
| 25 mph (40.23 km/h) | 24.59 mph (39.58 km/h) |
| 30 mph (48.28 km/h) | 29.51 mph (47.5 km/h) |
| 35 mph (56.33 km/h) | 34.43 mph (55.41 km/h) |
| 40 mph (64.37 km/h) | 39.35 mph (63.33 km/h) |
| 45 mph (72.42 km/h) | 44.27 mph (71.24 km/h) |
| 50 mph (80.47 km/h) | 49.19 mph (79.16 km/h) |
| 55 mph (88.51 km/h) | 54.11 mph (87.08 km/h) |
| 60 mph (96.56 km/h) | 59.02 mph (94.99 km/h) |
| 65 mph (104.61 km/h) | 63.94 mph (102.91 km/h) |
| 70 mph (112.65 km/h) | 68.86 mph (110.82 km/h) |
| 75 mph (120.7 km/h) | 73.78 mph (118.74 km/h) |
| 80 mph (128.75 km/h) | 78.7 mph (126.65 km/h) |
| 85 mph (136.79 km/h) | 83.62 mph (134.57 km/h) |
| 90 mph (144.84 km/h) | 88.54 mph (142.49 km/h) |
| 95 mph (152.89 km/h) | 93.46 mph (150.4 km/h) |
| 100 mph (160.93 km/h) | 98.37 mph (158.32 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2112 | 2454 | 2642 | 2759 | 2885 | 2975 | 3074 | 3191 | 3353 | 3514 | 3694 | 3838 | 4099 | 4386 | 4611 | 4755 | 4836 | 5132 | 5546 | 6444 |
Better Fuel Economy Factory Ratios Increased Power
