Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 305/70-22.5 | 305/80-22.5 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 39.31 (998.5) | 41.71 (1059.5) | 2.4 (61) 6.1% |
| Width inches (mm) | 12.01 (305) | 12.01 (305) | 0 (0) 0% |
| Circum. inches (mm) | 123.5 (3136.88) | 131.04 (3328.52) | 7.54 (191.64) 6.1% |
| Sidewall Height inches (mm) | 8.41 (213.5) | 9.61 (244) | 1.2 (30.5) 14.3% |
| Revolutions per mile (km) | 513.04 (318.79) | 483.5 (300.43) | -29.54 (-18.35) -5.8% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 21.22 mph (34.15 km/h) |
| 25 mph (40.23 km/h) | 26.53 mph (42.69 km/h) |
| 30 mph (48.28 km/h) | 31.83 mph (51.23 km/h) |
| 35 mph (56.33 km/h) | 37.14 mph (59.77 km/h) |
| 40 mph (64.37 km/h) | 42.44 mph (68.31 km/h) |
| 45 mph (72.42 km/h) | 47.75 mph (76.84 km/h) |
| 50 mph (80.47 km/h) | 53.05 mph (85.38 km/h) |
| 55 mph (88.51 km/h) | 58.36 mph (93.92 km/h) |
| 60 mph (96.56 km/h) | 63.67 mph (102.46 km/h) |
| 65 mph (104.61 km/h) | 68.97 mph (111 km/h) |
| 70 mph (112.65 km/h) | 74.28 mph (119.54 km/h) |
| 75 mph (120.7 km/h) | 79.58 mph (128.07 km/h) |
| 80 mph (128.75 km/h) | 84.89 mph (136.61 km/h) |
| 85 mph (136.79 km/h) | 90.19 mph (145.15 km/h) |
| 90 mph (144.84 km/h) | 95.5 mph (153.69 km/h) |
| 95 mph (152.89 km/h) | 100.8 mph (162.23 km/h) |
| 100 mph (160.93 km/h) | 106.11 mph (170.77 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1230 | 1429 | 1539 | 1607 | 1681 | 1733 | 1791 | 1859 | 1953 | 2047 | 2152 | 2236 | 2388 | 2555 | 2686 | 2770 | 2817 | 2990 | 3231 | 3754 |
Better Fuel Economy Factory Ratios Increased Power
