Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 190/55-15 | 285/40-15 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 23.23 (590) | 23.98 (609) | 0.75 (19) 3.2% |
| Width inches (mm) | 7.48 (190) | 11.22 (285) | 3.74 (95) 50% |
| Circum. inches (mm) | 72.97 (1853.54) | 75.32 (1913.23) | 2.35 (59.69) 3.2% |
| Sidewall Height inches (mm) | 4.11 (104.5) | 4.49 (114) | 0.37 (9.5) 9.1% |
| Revolutions per mile (km) | 868.25 (539.51) | 841.17 (522.68) | -27.09 (-16.83) -3.1% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 20.64 mph (33.22 km/h) |
| 25 mph (40.23 km/h) | 25.81 mph (41.53 km/h) |
| 30 mph (48.28 km/h) | 30.97 mph (49.84 km/h) |
| 35 mph (56.33 km/h) | 36.13 mph (58.14 km/h) |
| 40 mph (64.37 km/h) | 41.29 mph (66.45 km/h) |
| 45 mph (72.42 km/h) | 46.45 mph (74.75 km/h) |
| 50 mph (80.47 km/h) | 51.61 mph (83.06 km/h) |
| 55 mph (88.51 km/h) | 56.77 mph (91.36 km/h) |
| 60 mph (96.56 km/h) | 61.93 mph (99.67 km/h) |
| 65 mph (104.61 km/h) | 67.09 mph (107.98 km/h) |
| 70 mph (112.65 km/h) | 72.25 mph (116.28 km/h) |
| 75 mph (120.7 km/h) | 77.42 mph (124.59 km/h) |
| 80 mph (128.75 km/h) | 82.58 mph (132.89 km/h) |
| 85 mph (136.79 km/h) | 87.74 mph (141.2 km/h) |
| 90 mph (144.84 km/h) | 92.9 mph (149.51 km/h) |
| 95 mph (152.89 km/h) | 98.06 mph (157.81 km/h) |
| 100 mph (160.93 km/h) | 103.22 mph (166.12 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2141 | 2487 | 2678 | 2796 | 2924 | 3015 | 3115 | 3234 | 3398 | 3562 | 3744 | 3890 | 4154 | 4445 | 4673 | 4819 | 4901 | 5201 | 5620 | 6531 |
Better Fuel Economy Factory Ratios Increased Power
