Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 345/30-20 | 345/25-22 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 28.15 (715) | 28.79 (731.3) | 0.64 (16.3) 2.3% |
| Width inches (mm) | 13.58 (345) | 13.58 (345) | 0 (0) 0% |
| Circum. inches (mm) | 88.43 (2246.24) | 90.45 (2297.45) | 2.02 (51.21) 2.3% |
| Sidewall Height inches (mm) | 4.07 (103.5) | 3.4 (86.25) | -0.68 (-17.25) -16.7% |
| Revolutions per mile (km) | 716.46 (445.19) | 700.49 (435.26) | -15.97 (-9.92) -2.2% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 20.46 mph (32.92 km/h) |
| 25 mph (40.23 km/h) | 25.57 mph (41.15 km/h) |
| 30 mph (48.28 km/h) | 30.68 mph (49.38 km/h) |
| 35 mph (56.33 km/h) | 35.8 mph (57.61 km/h) |
| 40 mph (64.37 km/h) | 40.91 mph (65.84 km/h) |
| 45 mph (72.42 km/h) | 46.03 mph (74.07 km/h) |
| 50 mph (80.47 km/h) | 51.14 mph (82.3 km/h) |
| 55 mph (88.51 km/h) | 56.25 mph (90.53 km/h) |
| 60 mph (96.56 km/h) | 61.37 mph (98.76 km/h) |
| 65 mph (104.61 km/h) | 66.48 mph (106.99 km/h) |
| 70 mph (112.65 km/h) | 71.6 mph (115.22 km/h) |
| 75 mph (120.7 km/h) | 76.71 mph (123.45 km/h) |
| 80 mph (128.75 km/h) | 81.82 mph (131.68 km/h) |
| 85 mph (136.79 km/h) | 86.94 mph (139.91 km/h) |
| 90 mph (144.84 km/h) | 92.05 mph (148.14 km/h) |
| 95 mph (152.89 km/h) | 97.17 mph (156.37 km/h) |
| 100 mph (160.93 km/h) | 102.28 mph (164.6 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1783 | 2071 | 2230 | 2329 | 2435 | 2511 | 2594 | 2693 | 2829 | 2966 | 3118 | 3239 | 3459 | 3702 | 3891 | 4013 | 4081 | 4331 | 4680 | 5439 |
Better Fuel Economy Factory Ratios Increased Power
