Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 305/70-22.5 | 315/65-22.5 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 39.31 (998.5) | 38.62 (981) | -0.69 (-17.5) -1.8% |
| Width inches (mm) | 12.01 (305) | 12.4 (315) | 0.39 (10) 3.3% |
| Circum. inches (mm) | 123.5 (3136.88) | 121.33 (3081.9) | -2.16 (-54.98) -1.8% |
| Sidewall Height inches (mm) | 8.41 (213.5) | 8.06 (204.75) | -0.34 (-8.75) -4.1% |
| Revolutions per mile (km) | 513.04 (318.79) | 522.19 (324.47) | 9.15 (5.69) 1.8% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 19.65 mph (31.62 km/h) |
| 25 mph (40.23 km/h) | 24.56 mph (39.53 km/h) |
| 30 mph (48.28 km/h) | 29.47 mph (47.43 km/h) |
| 35 mph (56.33 km/h) | 34.39 mph (55.34 km/h) |
| 40 mph (64.37 km/h) | 39.3 mph (63.25 km/h) |
| 45 mph (72.42 km/h) | 44.21 mph (71.15 km/h) |
| 50 mph (80.47 km/h) | 49.12 mph (79.06 km/h) |
| 55 mph (88.51 km/h) | 54.04 mph (86.96 km/h) |
| 60 mph (96.56 km/h) | 58.95 mph (94.87 km/h) |
| 65 mph (104.61 km/h) | 63.86 mph (102.77 km/h) |
| 70 mph (112.65 km/h) | 68.77 mph (110.68 km/h) |
| 75 mph (120.7 km/h) | 73.69 mph (118.59 km/h) |
| 80 mph (128.75 km/h) | 78.6 mph (126.49 km/h) |
| 85 mph (136.79 km/h) | 83.51 mph (134.4 km/h) |
| 90 mph (144.84 km/h) | 88.42 mph (142.3 km/h) |
| 95 mph (152.89 km/h) | 93.34 mph (150.21 km/h) |
| 100 mph (160.93 km/h) | 98.25 mph (158.11 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1329 | 1544 | 1663 | 1736 | 1815 | 1872 | 1934 | 2007 | 2109 | 2211 | 2324 | 2415 | 2579 | 2760 | 2901 | 2991 | 3042 | 3229 | 3489 | 4054 |
Better Fuel Economy Factory Ratios Increased Power
