Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 210/40-18 | 190/40-18 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 24.61 (625.2) | 23.98 (609.2) | -0.63 (-16) -2.6% |
| Width inches (mm) | 8.27 (210) | 7.48 (190) | -0.79 (-20) -9.5% |
| Circum. inches (mm) | 77.33 (1964.12) | 75.35 (1913.86) | -1.98 (-50.27) -2.6% |
| Sidewall Height inches (mm) | 3.31 (84) | 2.99 (76) | -0.31 (-8) -9.5% |
| Revolutions per mile (km) | 819.37 (509.13) | 840.89 (522.5) | 21.52 (13.37) 2.6% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 19.49 mph (31.36 km/h) |
| 25 mph (40.23 km/h) | 24.36 mph (39.2 km/h) |
| 30 mph (48.28 km/h) | 29.23 mph (47.04 km/h) |
| 35 mph (56.33 km/h) | 34.1 mph (54.89 km/h) |
| 40 mph (64.37 km/h) | 38.98 mph (62.73 km/h) |
| 45 mph (72.42 km/h) | 43.85 mph (70.57 km/h) |
| 50 mph (80.47 km/h) | 48.72 mph (78.41 km/h) |
| 55 mph (88.51 km/h) | 53.59 mph (86.25 km/h) |
| 60 mph (96.56 km/h) | 58.46 mph (94.09 km/h) |
| 65 mph (104.61 km/h) | 63.34 mph (101.93 km/h) |
| 70 mph (112.65 km/h) | 68.21 mph (109.77 km/h) |
| 75 mph (120.7 km/h) | 73.08 mph (117.61 km/h) |
| 80 mph (128.75 km/h) | 77.95 mph (125.45 km/h) |
| 85 mph (136.79 km/h) | 82.82 mph (133.29 km/h) |
| 90 mph (144.84 km/h) | 87.7 mph (141.13 km/h) |
| 95 mph (152.89 km/h) | 92.57 mph (148.98 km/h) |
| 100 mph (160.93 km/h) | 97.44 mph (156.82 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2140 | 2486 | 2677 | 2796 | 2923 | 3014 | 3114 | 3233 | 3397 | 3560 | 3743 | 3888 | 4152 | 4444 | 4671 | 4817 | 4899 | 5200 | 5618 | 6529 |
Better Fuel Economy Factory Ratios Increased Power
