Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 36/12.5-16.5 | 40/15.5-17 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 36.03 (915.18) | 39.96 (1014.92) | 3.93 (99.74) 10.9% |
| Width inches (mm) | 12.52 (318) | 15.51 (394) | 2.99 (76) 23.9% |
| Circum. inches (mm) | 113.19 (2875.12) | 125.53 (3188.47) | 12.34 (313.34) 10.9% |
| Sidewall Height inches (mm) | 9.77 (248.04) | 11.48 (291.56) | 1.71 (43.52) 17.5% |
| Revolutions per mile (km) | 559.75 (347.81) | 504.74 (313.63) | -55.01 (-34.18) -9.8% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 22.18 mph (35.69 km/h) |
| 25 mph (40.23 km/h) | 27.72 mph (44.62 km/h) |
| 30 mph (48.28 km/h) | 33.27 mph (53.54 km/h) |
| 35 mph (56.33 km/h) | 38.81 mph (62.47 km/h) |
| 40 mph (64.37 km/h) | 44.36 mph (71.39 km/h) |
| 45 mph (72.42 km/h) | 49.9 mph (80.31 km/h) |
| 50 mph (80.47 km/h) | 55.45 mph (89.24 km/h) |
| 55 mph (88.51 km/h) | 60.99 mph (98.16 km/h) |
| 60 mph (96.56 km/h) | 66.54 mph (107.08 km/h) |
| 65 mph (104.61 km/h) | 72.08 mph (116.01 km/h) |
| 70 mph (112.65 km/h) | 77.63 mph (124.93 km/h) |
| 75 mph (120.7 km/h) | 83.17 mph (133.86 km/h) |
| 80 mph (128.75 km/h) | 88.72 mph (142.78 km/h) |
| 85 mph (136.79 km/h) | 94.26 mph (151.7 km/h) |
| 90 mph (144.84 km/h) | 99.81 mph (160.63 km/h) |
| 95 mph (152.89 km/h) | 105.35 mph (169.55 km/h) |
| 100 mph (160.93 km/h) | 110.9 mph (178.47 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1284 | 1492 | 1607 | 1678 | 1755 | 1809 | 1869 | 1940 | 2039 | 2137 | 2246 | 2334 | 2492 | 2667 | 2804 | 2891 | 2941 | 3121 | 3372 | 3919 |
Better Fuel Economy Factory Ratios Increased Power
