Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 210/40-18 | 210/30-17 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 24.61 (625.2) | 21.96 (557.8) | -2.65 (-67.4) -10.8% |
| Width inches (mm) | 8.27 (210) | 8.27 (210) | 0 (0) 0% |
| Circum. inches (mm) | 77.33 (1964.12) | 68.99 (1752.38) | -8.34 (-211.74) -10.8% |
| Sidewall Height inches (mm) | 3.31 (84) | 2.48 (63) | -0.83 (-21) -25% |
| Revolutions per mile (km) | 819.37 (509.13) | 918.38 (570.65) | 99.01 (61.52) 12.1% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 17.84 mph (28.72 km/h) |
| 25 mph (40.23 km/h) | 22.3 mph (35.9 km/h) |
| 30 mph (48.28 km/h) | 26.77 mph (43.08 km/h) |
| 35 mph (56.33 km/h) | 31.23 mph (50.25 km/h) |
| 40 mph (64.37 km/h) | 35.69 mph (57.43 km/h) |
| 45 mph (72.42 km/h) | 40.15 mph (64.61 km/h) |
| 50 mph (80.47 km/h) | 44.61 mph (71.79 km/h) |
| 55 mph (88.51 km/h) | 49.07 mph (78.97 km/h) |
| 60 mph (96.56 km/h) | 53.53 mph (86.15 km/h) |
| 65 mph (104.61 km/h) | 57.99 mph (93.33 km/h) |
| 70 mph (112.65 km/h) | 62.45 mph (100.51 km/h) |
| 75 mph (120.7 km/h) | 66.91 mph (107.69 km/h) |
| 80 mph (128.75 km/h) | 71.38 mph (114.87 km/h) |
| 85 mph (136.79 km/h) | 75.84 mph (122.05 km/h) |
| 90 mph (144.84 km/h) | 80.3 mph (129.23 km/h) |
| 95 mph (152.89 km/h) | 84.76 mph (136.41 km/h) |
| 100 mph (160.93 km/h) | 89.22 mph (143.59 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
Better Fuel Economy Factory Ratios Increased Power
