Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 345/30-20 | 345/35-20 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 28.15 (715) | 29.51 (749.5) | 1.36 (34.5) 4.8% |
| Width inches (mm) | 13.58 (345) | 13.58 (345) | 0 (0) 0% |
| Circum. inches (mm) | 88.43 (2246.24) | 92.7 (2354.62) | 4.27 (108.38) 4.8% |
| Sidewall Height inches (mm) | 4.07 (103.5) | 4.75 (120.75) | 0.68 (17.25) 16.7% |
| Revolutions per mile (km) | 716.46 (445.19) | 683.48 (424.7) | -32.98 (-20.49) -4.6% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 20.97 mph (33.74 km/h) |
| 25 mph (40.23 km/h) | 26.21 mph (42.18 km/h) |
| 30 mph (48.28 km/h) | 31.45 mph (50.61 km/h) |
| 35 mph (56.33 km/h) | 36.69 mph (59.05 km/h) |
| 40 mph (64.37 km/h) | 41.93 mph (67.48 km/h) |
| 45 mph (72.42 km/h) | 47.17 mph (75.92 km/h) |
| 50 mph (80.47 km/h) | 52.41 mph (84.35 km/h) |
| 55 mph (88.51 km/h) | 57.65 mph (92.79 km/h) |
| 60 mph (96.56 km/h) | 62.9 mph (101.22 km/h) |
| 65 mph (104.61 km/h) | 68.14 mph (109.66 km/h) |
| 70 mph (112.65 km/h) | 73.38 mph (118.09 km/h) |
| 75 mph (120.7 km/h) | 78.62 mph (126.53 km/h) |
| 80 mph (128.75 km/h) | 83.86 mph (134.96 km/h) |
| 85 mph (136.79 km/h) | 89.1 mph (143.4 km/h) |
| 90 mph (144.84 km/h) | 94.34 mph (151.83 km/h) |
| 95 mph (152.89 km/h) | 99.58 mph (160.27 km/h) |
| 100 mph (160.93 km/h) | 104.83 mph (168.7 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1739 | 2021 | 2176 | 2272 | 2376 | 2450 | 2531 | 2628 | 2761 | 2894 | 3042 | 3160 | 3375 | 3612 | 3797 | 3915 | 3982 | 4226 | 4567 | 5307 |
Better Fuel Economy Factory Ratios Increased Power
