Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 210/40-18 | 230/60-18 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 24.61 (625.2) | 28.87 (733.2) | 4.25 (108) 17.3% |
| Width inches (mm) | 8.27 (210) | 9.06 (230) | 0.79 (20) 9.5% |
| Circum. inches (mm) | 77.33 (1964.12) | 90.69 (2303.42) | 13.36 (339.29) 17.3% |
| Sidewall Height inches (mm) | 3.31 (84) | 5.43 (138) | 2.13 (54) 64.3% |
| Revolutions per mile (km) | 819.37 (509.13) | 698.68 (434.14) | -120.69 (-74.99) -14.7% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 23.45 mph (37.75 km/h) |
| 25 mph (40.23 km/h) | 29.32 mph (47.18 km/h) |
| 30 mph (48.28 km/h) | 35.18 mph (56.62 km/h) |
| 35 mph (56.33 km/h) | 41.05 mph (66.06 km/h) |
| 40 mph (64.37 km/h) | 46.91 mph (75.49 km/h) |
| 45 mph (72.42 km/h) | 52.77 mph (84.93 km/h) |
| 50 mph (80.47 km/h) | 58.64 mph (94.37 km/h) |
| 55 mph (88.51 km/h) | 64.5 mph (103.8 km/h) |
| 60 mph (96.56 km/h) | 70.36 mph (113.24 km/h) |
| 65 mph (104.61 km/h) | 76.23 mph (122.68 km/h) |
| 70 mph (112.65 km/h) | 82.09 mph (132.11 km/h) |
| 75 mph (120.7 km/h) | 87.96 mph (141.55 km/h) |
| 80 mph (128.75 km/h) | 93.82 mph (150.99 km/h) |
| 85 mph (136.79 km/h) | 99.68 mph (160.43 km/h) |
| 90 mph (144.84 km/h) | 105.55 mph (169.86 km/h) |
| 95 mph (152.89 km/h) | 111.41 mph (179.3 km/h) |
| 100 mph (160.93 km/h) | 117.27 mph (188.74 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1778 | 2066 | 2224 | 2323 | 2429 | 2504 | 2588 | 2686 | 2822 | 2958 | 3110 | 3231 | 3450 | 3692 | 3881 | 4002 | 4070 | 4320 | 4668 | 5425 |
Better Fuel Economy Factory Ratios Increased Power
