Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 36/12.5-16.5 | 40/12.5-16 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 36.03 (915.18) | 40.04 (1016.96) | 4.01 (101.78) 11.1% |
| Width inches (mm) | 12.52 (318) | 12.52 (318) | 0 (0) 0% |
| Circum. inches (mm) | 113.19 (2875.12) | 125.78 (3194.87) | 12.59 (319.75) 11.1% |
| Sidewall Height inches (mm) | 9.77 (248.04) | 12.02 (305.28) | 2.25 (57.24) 23.1% |
| Revolutions per mile (km) | 559.75 (347.81) | 503.73 (313) | -56.02 (-34.81) -10% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 22.22 mph (35.77 km/h) |
| 25 mph (40.23 km/h) | 27.78 mph (44.71 km/h) |
| 30 mph (48.28 km/h) | 33.34 mph (53.65 km/h) |
| 35 mph (56.33 km/h) | 38.89 mph (62.59 km/h) |
| 40 mph (64.37 km/h) | 44.45 mph (71.53 km/h) |
| 45 mph (72.42 km/h) | 50 mph (80.47 km/h) |
| 50 mph (80.47 km/h) | 55.56 mph (89.42 km/h) |
| 55 mph (88.51 km/h) | 61.12 mph (98.36 km/h) |
| 60 mph (96.56 km/h) | 66.67 mph (107.3 km/h) |
| 65 mph (104.61 km/h) | 72.23 mph (116.24 km/h) |
| 70 mph (112.65 km/h) | 77.78 mph (125.18 km/h) |
| 75 mph (120.7 km/h) | 83.34 mph (134.12 km/h) |
| 80 mph (128.75 km/h) | 88.9 mph (143.07 km/h) |
| 85 mph (136.79 km/h) | 94.45 mph (152.01 km/h) |
| 90 mph (144.84 km/h) | 100.01 mph (160.95 km/h) |
| 95 mph (152.89 km/h) | 105.57 mph (169.89 km/h) |
| 100 mph (160.93 km/h) | 111.12 mph (178.83 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1282 | 1489 | 1604 | 1675 | 1751 | 1806 | 1866 | 1936 | 2035 | 2133 | 2242 | 2329 | 2487 | 2662 | 2798 | 2886 | 2935 | 3115 | 3366 | 3911 |
Better Fuel Economy Factory Ratios Increased Power
