Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 235/80-17 | 255/70-22.5 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 31.8 (807.8) | 36.56 (928.5) | 4.75 (120.7) 14.9% |
| Width inches (mm) | 9.25 (235) | 10.04 (255) | 0.79 (20) 8.5% |
| Circum. inches (mm) | 99.91 (2537.78) | 114.84 (2916.97) | 14.93 (379.19) 14.9% |
| Sidewall Height inches (mm) | 7.4 (188) | 7.03 (178.5) | -0.37 (-9.5) -5.1% |
| Revolutions per mile (km) | 634.15 (394.04) | 551.72 (342.82) | -82.44 (-51.22) -13% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 22.99 mph (37 km/h) |
| 25 mph (40.23 km/h) | 28.74 mph (46.25 km/h) |
| 30 mph (48.28 km/h) | 34.48 mph (55.49 km/h) |
| 35 mph (56.33 km/h) | 40.23 mph (64.74 km/h) |
| 40 mph (64.37 km/h) | 45.98 mph (73.99 km/h) |
| 45 mph (72.42 km/h) | 51.72 mph (83.24 km/h) |
| 50 mph (80.47 km/h) | 57.47 mph (92.49 km/h) |
| 55 mph (88.51 km/h) | 63.22 mph (101.74 km/h) |
| 60 mph (96.56 km/h) | 68.97 mph (110.99 km/h) |
| 65 mph (104.61 km/h) | 74.71 mph (120.24 km/h) |
| 70 mph (112.65 km/h) | 80.46 mph (129.49 km/h) |
| 75 mph (120.7 km/h) | 86.21 mph (138.74 km/h) |
| 80 mph (128.75 km/h) | 91.95 mph (147.99 km/h) |
| 85 mph (136.79 km/h) | 97.7 mph (157.23 km/h) |
| 90 mph (144.84 km/h) | 103.45 mph (166.48 km/h) |
| 95 mph (152.89 km/h) | 109.19 mph (175.73 km/h) |
| 100 mph (160.93 km/h) | 114.94 mph (184.98 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1404 | 1631 | 1757 | 1834 | 1918 | 1978 | 2043 | 2121 | 2229 | 2336 | 2456 | 2551 | 2724 | 2916 | 3065 | 3161 | 3214 | 3411 | 3686 | 4284 |
Better Fuel Economy Factory Ratios Increased Power
