Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 210/40-18 | 230/50-18 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 24.61 (625.2) | 27.06 (687.2) | 2.44 (62) 9.9% |
| Width inches (mm) | 8.27 (210) | 9.06 (230) | 0.79 (20) 9.5% |
| Circum. inches (mm) | 77.33 (1964.12) | 85 (2158.9) | 7.67 (194.78) 9.9% |
| Sidewall Height inches (mm) | 3.31 (84) | 4.53 (115) | 1.22 (31) 36.9% |
| Revolutions per mile (km) | 819.37 (509.13) | 745.45 (463.2) | -73.92 (-45.93) -9% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 21.98 mph (35.38 km/h) |
| 25 mph (40.23 km/h) | 27.48 mph (44.22 km/h) |
| 30 mph (48.28 km/h) | 32.98 mph (53.07 km/h) |
| 35 mph (56.33 km/h) | 38.47 mph (61.91 km/h) |
| 40 mph (64.37 km/h) | 43.97 mph (70.76 km/h) |
| 45 mph (72.42 km/h) | 49.46 mph (79.6 km/h) |
| 50 mph (80.47 km/h) | 54.96 mph (88.45 km/h) |
| 55 mph (88.51 km/h) | 60.45 mph (97.29 km/h) |
| 60 mph (96.56 km/h) | 65.95 mph (106.14 km/h) |
| 65 mph (104.61 km/h) | 71.45 mph (114.98 km/h) |
| 70 mph (112.65 km/h) | 76.94 mph (123.83 km/h) |
| 75 mph (120.7 km/h) | 82.44 mph (132.67 km/h) |
| 80 mph (128.75 km/h) | 87.93 mph (141.52 km/h) |
| 85 mph (136.79 km/h) | 93.43 mph (150.36 km/h) |
| 90 mph (144.84 km/h) | 98.93 mph (159.2 km/h) |
| 95 mph (152.89 km/h) | 104.42 mph (168.05 km/h) |
| 100 mph (160.93 km/h) | 109.92 mph (176.89 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1897 | 2204 | 2373 | 2478 | 2591 | 2672 | 2761 | 2866 | 3011 | 3156 | 3318 | 3447 | 3681 | 3939 | 4141 | 4270 | 4343 | 4609 | 4981 | 5788 |
Better Fuel Economy Factory Ratios Increased Power
