Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 210/40-18 | 225/25-18 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 24.61 (625.2) | 22.43 (569.7) | -2.19 (-55.5) -8.9% |
| Width inches (mm) | 8.27 (210) | 8.86 (225) | 0.59 (15) 7.1% |
| Circum. inches (mm) | 77.33 (1964.12) | 70.46 (1789.77) | -6.86 (-174.36) -8.9% |
| Sidewall Height inches (mm) | 3.31 (84) | 2.21 (56.25) | -1.09 (-27.75) -33% |
| Revolutions per mile (km) | 819.37 (509.13) | 899.19 (558.73) | 79.82 (49.6) 9.7% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 18.22 mph (29.33 km/h) |
| 25 mph (40.23 km/h) | 22.78 mph (36.66 km/h) |
| 30 mph (48.28 km/h) | 27.34 mph (43.99 km/h) |
| 35 mph (56.33 km/h) | 31.89 mph (51.33 km/h) |
| 40 mph (64.37 km/h) | 36.45 mph (58.66 km/h) |
| 45 mph (72.42 km/h) | 41.01 mph (65.99 km/h) |
| 50 mph (80.47 km/h) | 45.56 mph (73.32 km/h) |
| 55 mph (88.51 km/h) | 50.12 mph (80.66 km/h) |
| 60 mph (96.56 km/h) | 54.67 mph (87.99 km/h) |
| 65 mph (104.61 km/h) | 59.23 mph (95.32 km/h) |
| 70 mph (112.65 km/h) | 63.79 mph (102.65 km/h) |
| 75 mph (120.7 km/h) | 68.34 mph (109.99 km/h) |
| 80 mph (128.75 km/h) | 72.9 mph (117.32 km/h) |
| 85 mph (136.79 km/h) | 77.45 mph (124.65 km/h) |
| 90 mph (144.84 km/h) | 82.01 mph (131.98 km/h) |
| 95 mph (152.89 km/h) | 86.57 mph (139.32 km/h) |
| 100 mph (160.93 km/h) | 91.12 mph (146.65 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2288 | 2658 | 2863 | 2989 | 3126 | 3223 | 3330 | 3457 | 3632 | 3807 | 4002 | 4158 | 4440 | 4752 | 4995 | 5151 | 5239 | 5560 | 6008 | 6982 |
Better Fuel Economy Factory Ratios Increased Power
