Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 345/30-20 | 335/45-20 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 28.15 (715) | 31.87 (809.5) | 3.72 (94.5) 13.2% |
| Width inches (mm) | 13.58 (345) | 13.19 (335) | -0.39 (-10) -2.9% |
| Circum. inches (mm) | 88.43 (2246.24) | 100.12 (2543.12) | 11.69 (296.88) 13.2% |
| Sidewall Height inches (mm) | 4.07 (103.5) | 5.94 (150.75) | 1.86 (47.25) 45.7% |
| Revolutions per mile (km) | 716.46 (445.19) | 632.82 (393.22) | -83.64 (-51.97) -11.7% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 22.64 mph (36.44 km/h) |
| 25 mph (40.23 km/h) | 28.3 mph (45.55 km/h) |
| 30 mph (48.28 km/h) | 33.97 mph (54.66 km/h) |
| 35 mph (56.33 km/h) | 39.63 mph (63.77 km/h) |
| 40 mph (64.37 km/h) | 45.29 mph (72.88 km/h) |
| 45 mph (72.42 km/h) | 50.95 mph (81.99 km/h) |
| 50 mph (80.47 km/h) | 56.61 mph (91.1 km/h) |
| 55 mph (88.51 km/h) | 62.27 mph (100.21 km/h) |
| 60 mph (96.56 km/h) | 67.93 mph (109.32 km/h) |
| 65 mph (104.61 km/h) | 73.59 mph (118.43 km/h) |
| 70 mph (112.65 km/h) | 79.25 mph (127.54 km/h) |
| 75 mph (120.7 km/h) | 84.91 mph (136.65 km/h) |
| 80 mph (128.75 km/h) | 90.57 mph (145.76 km/h) |
| 85 mph (136.79 km/h) | 96.23 mph (154.87 km/h) |
| 90 mph (144.84 km/h) | 101.9 mph (163.98 km/h) |
| 95 mph (152.89 km/h) | 107.56 mph (173.09 km/h) |
| 100 mph (160.93 km/h) | 113.22 mph (182.21 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1610 | 1871 | 2015 | 2104 | 2200 | 2268 | 2344 | 2433 | 2556 | 2679 | 2817 | 2926 | 3125 | 3344 | 3515 | 3625 | 3687 | 3913 | 4228 | 4913 |
Better Fuel Economy Factory Ratios Increased Power
