Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 38/13.5-20 | 365/75-16 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 38.1 (967.62) | 37.56 (953.9) | -0.54 (-13.72) -1.4% |
| Width inches (mm) | 13.5 (343) | 14.37 (365) | 0.87 (22) 6.4% |
| Circum. inches (mm) | 119.68 (3039.87) | 117.98 (2996.77) | -1.7 (-43.1) -1.4% |
| Sidewall Height inches (mm) | 9.05 (229.81) | 10.78 (273.75) | 1.73 (43.94) 19.1% |
| Revolutions per mile (km) | 529.41 (328.96) | 537.03 (333.69) | 7.61 (4.73) 1.4% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 19.72 mph (31.73 km/h) |
| 25 mph (40.23 km/h) | 24.65 mph (39.66 km/h) |
| 30 mph (48.28 km/h) | 29.57 mph (47.6 km/h) |
| 35 mph (56.33 km/h) | 34.5 mph (55.53 km/h) |
| 40 mph (64.37 km/h) | 39.43 mph (63.46 km/h) |
| 45 mph (72.42 km/h) | 44.36 mph (71.39 km/h) |
| 50 mph (80.47 km/h) | 49.29 mph (79.33 km/h) |
| 55 mph (88.51 km/h) | 54.22 mph (87.26 km/h) |
| 60 mph (96.56 km/h) | 59.15 mph (95.19 km/h) |
| 65 mph (104.61 km/h) | 64.08 mph (103.12 km/h) |
| 70 mph (112.65 km/h) | 69.01 mph (111.06 km/h) |
| 75 mph (120.7 km/h) | 73.94 mph (118.99 km/h) |
| 80 mph (128.75 km/h) | 78.87 mph (126.92 km/h) |
| 85 mph (136.79 km/h) | 83.79 mph (134.85 km/h) |
| 90 mph (144.84 km/h) | 88.72 mph (142.79 km/h) |
| 95 mph (152.89 km/h) | 93.65 mph (150.72 km/h) |
| 100 mph (160.93 km/h) | 98.58 mph (158.65 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1367 | 1588 | 1710 | 1785 | 1867 | 1925 | 1989 | 2064 | 2169 | 2274 | 2390 | 2483 | 2652 | 2838 | 2983 | 3076 | 3129 | 3321 | 3588 | 4170 |
Better Fuel Economy Factory Ratios Increased Power
