Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 285/40-15 | 265/65-15 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 23.98 (609) | 28.56 (725.5) | 4.59 (116.5) 19.1% |
| Width inches (mm) | 11.22 (285) | 10.43 (265) | -0.79 (-20) -7% |
| Circum. inches (mm) | 75.32 (1913.23) | 89.73 (2279.23) | 14.41 (366) 19.1% |
| Sidewall Height inches (mm) | 4.49 (114) | 6.78 (172.25) | 2.29 (58.25) 51.1% |
| Revolutions per mile (km) | 841.17 (522.68) | 706.09 (438.74) | -135.07 (-83.93) -16.1% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 23.83 mph (38.34 km/h) |
| 25 mph (40.23 km/h) | 29.78 mph (47.93 km/h) |
| 30 mph (48.28 km/h) | 35.74 mph (57.52 km/h) |
| 35 mph (56.33 km/h) | 41.7 mph (67.1 km/h) |
| 40 mph (64.37 km/h) | 47.65 mph (76.69 km/h) |
| 45 mph (72.42 km/h) | 53.61 mph (86.27 km/h) |
| 50 mph (80.47 km/h) | 59.56 mph (95.86 km/h) |
| 55 mph (88.51 km/h) | 65.52 mph (105.45 km/h) |
| 60 mph (96.56 km/h) | 71.48 mph (115.03 km/h) |
| 65 mph (104.61 km/h) | 77.43 mph (124.62 km/h) |
| 70 mph (112.65 km/h) | 83.39 mph (134.2 km/h) |
| 75 mph (120.7 km/h) | 89.35 mph (143.79 km/h) |
| 80 mph (128.75 km/h) | 95.3 mph (153.38 km/h) |
| 85 mph (136.79 km/h) | 101.26 mph (162.96 km/h) |
| 90 mph (144.84 km/h) | 107.22 mph (172.55 km/h) |
| 95 mph (152.89 km/h) | 113.17 mph (182.14 km/h) |
| 100 mph (160.93 km/h) | 119.13 mph (191.72 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1797 | 2087 | 2248 | 2347 | 2454 | 2531 | 2615 | 2714 | 2852 | 2990 | 3143 | 3265 | 3487 | 3731 | 3923 | 4045 | 4114 | 4366 | 4718 | 5482 |
Better Fuel Economy Factory Ratios Increased Power
