Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 36/12.5-16.5 | 40/17-15 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 36.03 (915.18) | 40.17 (1020.36) | 4.14 (105.18) 11.5% |
| Width inches (mm) | 12.52 (318) | 17.01 (432) | 4.49 (114) 35.8% |
| Circum. inches (mm) | 113.19 (2875.12) | 126.2 (3205.56) | 13.01 (330.43) 11.5% |
| Sidewall Height inches (mm) | 9.77 (248.04) | 12.59 (319.68) | 2.82 (71.64) 28.9% |
| Revolutions per mile (km) | 559.75 (347.81) | 502.05 (311.96) | -57.7 (-35.85) -10.3% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 22.3 mph (35.89 km/h) |
| 25 mph (40.23 km/h) | 27.87 mph (44.86 km/h) |
| 30 mph (48.28 km/h) | 33.45 mph (53.83 km/h) |
| 35 mph (56.33 km/h) | 39.02 mph (62.8 km/h) |
| 40 mph (64.37 km/h) | 44.6 mph (71.77 km/h) |
| 45 mph (72.42 km/h) | 50.17 mph (80.74 km/h) |
| 50 mph (80.47 km/h) | 55.75 mph (89.72 km/h) |
| 55 mph (88.51 km/h) | 61.32 mph (98.69 km/h) |
| 60 mph (96.56 km/h) | 66.9 mph (107.66 km/h) |
| 65 mph (104.61 km/h) | 72.47 mph (116.63 km/h) |
| 70 mph (112.65 km/h) | 78.04 mph (125.6 km/h) |
| 75 mph (120.7 km/h) | 83.62 mph (134.57 km/h) |
| 80 mph (128.75 km/h) | 89.19 mph (143.54 km/h) |
| 85 mph (136.79 km/h) | 94.77 mph (152.52 km/h) |
| 90 mph (144.84 km/h) | 100.34 mph (161.49 km/h) |
| 95 mph (152.89 km/h) | 105.92 mph (170.46 km/h) |
| 100 mph (160.93 km/h) | 111.49 mph (179.43 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1278 | 1484 | 1598 | 1669 | 1745 | 1800 | 1859 | 1930 | 2028 | 2126 | 2234 | 2321 | 2479 | 2653 | 2789 | 2876 | 2925 | 3104 | 3354 | 3898 |
Better Fuel Economy Factory Ratios Increased Power
