Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 305/30-22 | 37/12.5-22 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 29.2 (741.8) | 37.02 (940.4) | 7.82 (198.6) 26.8% |
| Width inches (mm) | 12.01 (305) | 12.52 (318) | 0.51 (13) 4.3% |
| Circum. inches (mm) | 91.75 (2330.43) | 116.31 (2954.35) | 24.56 (623.92) 26.8% |
| Sidewall Height inches (mm) | 3.6 (91.5) | 7.51 (190.8) | 3.91 (99.3) 108.5% |
| Revolutions per mile (km) | 690.58 (429.1) | 544.74 (338.48) | -145.84 (-90.62) -21.1% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 25.35 mph (40.8 km/h) |
| 25 mph (40.23 km/h) | 31.69 mph (51.01 km/h) |
| 30 mph (48.28 km/h) | 38.03 mph (61.21 km/h) |
| 35 mph (56.33 km/h) | 44.37 mph (71.41 km/h) |
| 40 mph (64.37 km/h) | 50.71 mph (81.61 km/h) |
| 45 mph (72.42 km/h) | 57.05 mph (91.81 km/h) |
| 50 mph (80.47 km/h) | 63.39 mph (102.01 km/h) |
| 55 mph (88.51 km/h) | 69.72 mph (112.21 km/h) |
| 60 mph (96.56 km/h) | 76.06 mph (122.41 km/h) |
| 65 mph (104.61 km/h) | 82.4 mph (132.61 km/h) |
| 70 mph (112.65 km/h) | 88.74 mph (142.81 km/h) |
| 75 mph (120.7 km/h) | 95.08 mph (153.02 km/h) |
| 80 mph (128.75 km/h) | 101.42 mph (163.22 km/h) |
| 85 mph (136.79 km/h) | 107.76 mph (173.42 km/h) |
| 90 mph (144.84 km/h) | 114.1 mph (183.62 km/h) |
| 95 mph (152.89 km/h) | 120.43 mph (193.82 km/h) |
| 100 mph (160.93 km/h) | 126.77 mph (204.02 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1386 | 1610 | 1734 | 1811 | 1894 | 1953 | 2017 | 2094 | 2200 | 2306 | 2424 | 2519 | 2690 | 2879 | 3026 | 3121 | 3174 | 3368 | 3640 | 4230 |
Better Fuel Economy Factory Ratios Increased Power
