Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 38/15.5-20 | 35/13.5-24 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 37.99 (965.04) | 35.07 (890.86) | -2.92 (-74.18) -7.7% |
| Width inches (mm) | 15.51 (394) | 13.5 (343) | -2.01 (-51) -12.9% |
| Circum. inches (mm) | 119.36 (3031.76) | 110.19 (2798.72) | -9.17 (-233.04) -7.7% |
| Sidewall Height inches (mm) | 9 (228.52) | 5.54 (140.63) | -3.46 (-87.89) -38.5% |
| Revolutions per mile (km) | 530.83 (329.84) | 575.03 (357.31) | 44.2 (27.47) 8.3% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 18.46 mph (29.71 km/h) |
| 25 mph (40.23 km/h) | 23.08 mph (37.14 km/h) |
| 30 mph (48.28 km/h) | 27.69 mph (44.57 km/h) |
| 35 mph (56.33 km/h) | 32.31 mph (52 km/h) |
| 40 mph (64.37 km/h) | 36.93 mph (59.43 km/h) |
| 45 mph (72.42 km/h) | 41.54 mph (66.85 km/h) |
| 50 mph (80.47 km/h) | 46.16 mph (74.28 km/h) |
| 55 mph (88.51 km/h) | 50.77 mph (81.71 km/h) |
| 60 mph (96.56 km/h) | 55.39 mph (89.14 km/h) |
| 65 mph (104.61 km/h) | 60 mph (96.57 km/h) |
| 70 mph (112.65 km/h) | 64.62 mph (103.99 km/h) |
| 75 mph (120.7 km/h) | 69.23 mph (111.42 km/h) |
| 80 mph (128.75 km/h) | 73.85 mph (118.85 km/h) |
| 85 mph (136.79 km/h) | 78.47 mph (126.28 km/h) |
| 90 mph (144.84 km/h) | 83.08 mph (133.71 km/h) |
| 95 mph (152.89 km/h) | 87.7 mph (141.14 km/h) |
| 100 mph (160.93 km/h) | 92.31 mph (148.56 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1463 | 1700 | 1831 | 1912 | 1999 | 2061 | 2130 | 2211 | 2323 | 2435 | 2559 | 2659 | 2839 | 3039 | 3194 | 3294 | 3350 | 3556 | 3842 | 4465 |
Better Fuel Economy Factory Ratios Increased Power
