Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 345/30-19 | 345/30-18 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 27.15 (689.6) | 26.15 (664.2) | -1 (-25.4) -3.7% |
| Width inches (mm) | 13.58 (345) | 13.58 (345) | 0 (0) 0% |
| Circum. inches (mm) | 85.29 (2166.44) | 82.15 (2086.65) | -3.14 (-79.8) -3.7% |
| Sidewall Height inches (mm) | 4.07 (103.5) | 4.07 (103.5) | 0 (0) 0% |
| Revolutions per mile (km) | 742.85 (461.59) | 771.26 (479.24) | 28.41 (17.65) 3.8% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 19.26 mph (31 km/h) |
| 25 mph (40.23 km/h) | 24.08 mph (38.75 km/h) |
| 30 mph (48.28 km/h) | 28.9 mph (46.5 km/h) |
| 35 mph (56.33 km/h) | 33.71 mph (54.25 km/h) |
| 40 mph (64.37 km/h) | 38.53 mph (62 km/h) |
| 45 mph (72.42 km/h) | 43.34 mph (69.75 km/h) |
| 50 mph (80.47 km/h) | 48.16 mph (77.5 km/h) |
| 55 mph (88.51 km/h) | 52.97 mph (85.25 km/h) |
| 60 mph (96.56 km/h) | 57.79 mph (93 km/h) |
| 65 mph (104.61 km/h) | 62.61 mph (100.75 km/h) |
| 70 mph (112.65 km/h) | 67.42 mph (108.5 km/h) |
| 75 mph (120.7 km/h) | 72.24 mph (116.26 km/h) |
| 80 mph (128.75 km/h) | 77.05 mph (124.01 km/h) |
| 85 mph (136.79 km/h) | 81.87 mph (131.76 km/h) |
| 90 mph (144.84 km/h) | 86.69 mph (139.51 km/h) |
| 95 mph (152.89 km/h) | 91.5 mph (147.26 km/h) |
| 100 mph (160.93 km/h) | 96.32 mph (155.01 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1963 | 2280 | 2455 | 2564 | 2681 | 2764 | 2856 | 2965 | 3115 | 3266 | 3433 | 3566 | 3808 | 4076 | 4285 | 4418 | 4493 | 4769 | 5153 | 5988 |
Better Fuel Economy Factory Ratios Increased Power
