Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 210/40-18 | 210/55-18 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 24.61 (625.2) | 27.09 (688.2) | 2.48 (63) 10.1% |
| Width inches (mm) | 8.27 (210) | 8.27 (210) | 0 (0) 0% |
| Circum. inches (mm) | 77.33 (1964.12) | 85.12 (2162.04) | 7.79 (197.92) 10.1% |
| Sidewall Height inches (mm) | 3.31 (84) | 4.55 (115.5) | 1.24 (31.5) 37.5% |
| Revolutions per mile (km) | 819.37 (509.13) | 744.36 (462.52) | -75.01 (-46.61) -9.2% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 22.02 mph (35.43 km/h) |
| 25 mph (40.23 km/h) | 27.52 mph (44.29 km/h) |
| 30 mph (48.28 km/h) | 33.02 mph (53.15 km/h) |
| 35 mph (56.33 km/h) | 38.53 mph (62 km/h) |
| 40 mph (64.37 km/h) | 44.03 mph (70.86 km/h) |
| 45 mph (72.42 km/h) | 49.53 mph (79.72 km/h) |
| 50 mph (80.47 km/h) | 55.04 mph (88.58 km/h) |
| 55 mph (88.51 km/h) | 60.54 mph (97.43 km/h) |
| 60 mph (96.56 km/h) | 66.05 mph (106.29 km/h) |
| 65 mph (104.61 km/h) | 71.55 mph (115.15 km/h) |
| 70 mph (112.65 km/h) | 77.05 mph (124.01 km/h) |
| 75 mph (120.7 km/h) | 82.56 mph (132.86 km/h) |
| 80 mph (128.75 km/h) | 88.06 mph (141.72 km/h) |
| 85 mph (136.79 km/h) | 93.57 mph (150.58 km/h) |
| 90 mph (144.84 km/h) | 99.07 mph (159.44 km/h) |
| 95 mph (152.89 km/h) | 104.57 mph (168.29 km/h) |
| 100 mph (160.93 km/h) | 110.08 mph (177.15 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1894 | 2201 | 2370 | 2475 | 2587 | 2668 | 2757 | 2862 | 3007 | 3152 | 3313 | 3442 | 3676 | 3934 | 4135 | 4264 | 4337 | 4603 | 4973 | 5780 |
Better Fuel Economy Factory Ratios Increased Power
