Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 38/13.5-20 | 335/80-20 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 38.1 (967.62) | 41.1 (1044) | 3.01 (76.38) 7.9% |
| Width inches (mm) | 13.5 (343) | 13.19 (335) | -0.31 (-8) -2.3% |
| Circum. inches (mm) | 119.68 (3039.87) | 129.13 (3279.82) | 9.45 (239.95) 7.9% |
| Sidewall Height inches (mm) | 9.05 (229.81) | 10.55 (268) | 1.5 (38.19) 16.6% |
| Revolutions per mile (km) | 529.41 (328.96) | 490.68 (304.89) | -38.73 (-24.07) -7.3% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 21.58 mph (34.73 km/h) |
| 25 mph (40.23 km/h) | 26.97 mph (43.41 km/h) |
| 30 mph (48.28 km/h) | 32.37 mph (52.09 km/h) |
| 35 mph (56.33 km/h) | 37.76 mph (60.77 km/h) |
| 40 mph (64.37 km/h) | 43.16 mph (69.46 km/h) |
| 45 mph (72.42 km/h) | 48.55 mph (78.14 km/h) |
| 50 mph (80.47 km/h) | 53.95 mph (86.82 km/h) |
| 55 mph (88.51 km/h) | 59.34 mph (95.5 km/h) |
| 60 mph (96.56 km/h) | 64.74 mph (104.18 km/h) |
| 65 mph (104.61 km/h) | 70.13 mph (112.86 km/h) |
| 70 mph (112.65 km/h) | 75.53 mph (121.55 km/h) |
| 75 mph (120.7 km/h) | 80.92 mph (130.23 km/h) |
| 80 mph (128.75 km/h) | 86.31 mph (138.91 km/h) |
| 85 mph (136.79 km/h) | 91.71 mph (147.59 km/h) |
| 90 mph (144.84 km/h) | 97.1 mph (156.27 km/h) |
| 95 mph (152.89 km/h) | 102.5 mph (164.96 km/h) |
| 100 mph (160.93 km/h) | 107.89 mph (173.64 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1249 | 1451 | 1562 | 1631 | 1706 | 1759 | 1817 | 1886 | 1982 | 2078 | 2184 | 2269 | 2423 | 2593 | 2726 | 2811 | 2859 | 3034 | 3278 | 3810 |
Better Fuel Economy Factory Ratios Increased Power
