Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 335/30-20 | 335/40-20 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 27.91 (709) | 30.55 (776) | 2.64 (67) 9.4% |
| Width inches (mm) | 13.19 (335) | 13.19 (335) | 0 (0) 0% |
| Circum. inches (mm) | 87.69 (2227.39) | 95.98 (2437.88) | 8.29 (210.49) 9.4% |
| Sidewall Height inches (mm) | 3.96 (100.5) | 5.28 (134) | 1.32 (33.5) 33.3% |
| Revolutions per mile (km) | 722.52 (448.96) | 660.14 (410.19) | -62.38 (-38.76) -8.6% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 21.89 mph (35.23 km/h) |
| 25 mph (40.23 km/h) | 27.36 mph (44.04 km/h) |
| 30 mph (48.28 km/h) | 32.83 mph (52.84 km/h) |
| 35 mph (56.33 km/h) | 38.31 mph (61.65 km/h) |
| 40 mph (64.37 km/h) | 43.78 mph (70.46 km/h) |
| 45 mph (72.42 km/h) | 49.25 mph (79.26 km/h) |
| 50 mph (80.47 km/h) | 54.72 mph (88.07 km/h) |
| 55 mph (88.51 km/h) | 60.2 mph (96.88 km/h) |
| 60 mph (96.56 km/h) | 65.67 mph (105.69 km/h) |
| 65 mph (104.61 km/h) | 71.14 mph (114.49 km/h) |
| 70 mph (112.65 km/h) | 76.61 mph (123.3 km/h) |
| 75 mph (120.7 km/h) | 82.09 mph (132.11 km/h) |
| 80 mph (128.75 km/h) | 87.56 mph (140.91 km/h) |
| 85 mph (136.79 km/h) | 93.03 mph (149.72 km/h) |
| 90 mph (144.84 km/h) | 98.5 mph (158.53 km/h) |
| 95 mph (152.89 km/h) | 103.98 mph (167.34 km/h) |
| 100 mph (160.93 km/h) | 109.45 mph (176.14 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1680 | 1952 | 2102 | 2195 | 2295 | 2366 | 2445 | 2538 | 2666 | 2795 | 2938 | 3052 | 3260 | 3489 | 3667 | 3782 | 3846 | 4082 | 4411 | 5126 |
Better Fuel Economy Factory Ratios Increased Power
