Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 345/30-20 | 35/13.5-20 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 28.15 (715) | 35.12 (892.16) | 6.97 (177.16) 24.8% |
| Width inches (mm) | 13.58 (345) | 13.5 (343) | -0.08 (-2) -0.6% |
| Circum. inches (mm) | 88.43 (2246.24) | 110.35 (2802.8) | 21.91 (556.56) 24.8% |
| Sidewall Height inches (mm) | 4.07 (103.5) | 7.56 (192.08) | 3.49 (88.58) 85.6% |
| Revolutions per mile (km) | 716.46 (445.19) | 574.19 (356.78) | -142.27 (-88.4) -19.9% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 24.96 mph (40.16 km/h) |
| 25 mph (40.23 km/h) | 31.19 mph (50.2 km/h) |
| 30 mph (48.28 km/h) | 37.43 mph (60.24 km/h) |
| 35 mph (56.33 km/h) | 43.67 mph (70.28 km/h) |
| 40 mph (64.37 km/h) | 49.91 mph (80.32 km/h) |
| 45 mph (72.42 km/h) | 56.15 mph (90.36 km/h) |
| 50 mph (80.47 km/h) | 62.39 mph (100.41 km/h) |
| 55 mph (88.51 km/h) | 68.63 mph (110.45 km/h) |
| 60 mph (96.56 km/h) | 74.87 mph (120.49 km/h) |
| 65 mph (104.61 km/h) | 81.11 mph (130.53 km/h) |
| 70 mph (112.65 km/h) | 87.34 mph (140.57 km/h) |
| 75 mph (120.7 km/h) | 93.58 mph (150.61 km/h) |
| 80 mph (128.75 km/h) | 99.82 mph (160.65 km/h) |
| 85 mph (136.79 km/h) | 106.06 mph (170.69 km/h) |
| 90 mph (144.84 km/h) | 112.3 mph (180.73 km/h) |
| 95 mph (152.89 km/h) | 118.54 mph (190.77 km/h) |
| 100 mph (160.93 km/h) | 124.78 mph (200.81 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1461 | 1697 | 1828 | 1909 | 1996 | 2058 | 2127 | 2207 | 2319 | 2431 | 2556 | 2655 | 2835 | 3034 | 3190 | 3289 | 3345 | 3550 | 3836 | 4458 |
Better Fuel Economy Factory Ratios Increased Power
