Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 38/15.5-20 | 365/60-20 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 37.99 (965.04) | 37.24 (946) | -0.75 (-19.04) -2% |
| Width inches (mm) | 15.51 (394) | 14.37 (365) | -1.14 (-29) -7.4% |
| Circum. inches (mm) | 119.36 (3031.76) | 117.01 (2971.95) | -2.35 (-59.82) -2% |
| Sidewall Height inches (mm) | 9 (228.52) | 8.62 (219) | -0.37 (-9.52) -4.2% |
| Revolutions per mile (km) | 530.83 (329.84) | 541.51 (336.48) | 10.68 (6.64) 2% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 19.61 mph (31.55 km/h) |
| 25 mph (40.23 km/h) | 24.51 mph (39.44 km/h) |
| 30 mph (48.28 km/h) | 29.41 mph (47.33 km/h) |
| 35 mph (56.33 km/h) | 34.31 mph (55.22 km/h) |
| 40 mph (64.37 km/h) | 39.21 mph (63.1 km/h) |
| 45 mph (72.42 km/h) | 44.11 mph (70.99 km/h) |
| 50 mph (80.47 km/h) | 49.01 mph (78.88 km/h) |
| 55 mph (88.51 km/h) | 53.91 mph (86.77 km/h) |
| 60 mph (96.56 km/h) | 58.82 mph (94.66 km/h) |
| 65 mph (104.61 km/h) | 63.72 mph (102.54 km/h) |
| 70 mph (112.65 km/h) | 68.62 mph (110.43 km/h) |
| 75 mph (120.7 km/h) | 73.52 mph (118.32 km/h) |
| 80 mph (128.75 km/h) | 78.42 mph (126.21 km/h) |
| 85 mph (136.79 km/h) | 83.32 mph (134.1 km/h) |
| 90 mph (144.84 km/h) | 88.22 mph (141.98 km/h) |
| 95 mph (152.89 km/h) | 93.13 mph (149.87 km/h) |
| 100 mph (160.93 km/h) | 98.03 mph (157.76 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1378 | 1601 | 1724 | 1800 | 1882 | 1941 | 2005 | 2082 | 2187 | 2293 | 2410 | 2504 | 2674 | 2862 | 3008 | 3102 | 3155 | 3348 | 3618 | 4205 |
Better Fuel Economy Factory Ratios Increased Power
