Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 285/40-15 | 275/40-15 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 23.98 (609) | 23.66 (601) | -0.31 (-8) -1.3% |
| Width inches (mm) | 11.22 (285) | 10.83 (275) | -0.39 (-10) -3.5% |
| Circum. inches (mm) | 75.32 (1913.23) | 74.33 (1888.1) | -0.99 (-25.13) -1.3% |
| Sidewall Height inches (mm) | 4.49 (114) | 4.33 (110) | -0.16 (-4) -3.5% |
| Revolutions per mile (km) | 841.17 (522.68) | 852.36 (529.63) | 11.2 (6.96) 1.3% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 19.74 mph (31.76 km/h) |
| 25 mph (40.23 km/h) | 24.67 mph (39.71 km/h) |
| 30 mph (48.28 km/h) | 29.61 mph (47.65 km/h) |
| 35 mph (56.33 km/h) | 34.54 mph (55.59 km/h) |
| 40 mph (64.37 km/h) | 39.47 mph (63.53 km/h) |
| 45 mph (72.42 km/h) | 44.41 mph (71.47 km/h) |
| 50 mph (80.47 km/h) | 49.34 mph (79.41 km/h) |
| 55 mph (88.51 km/h) | 54.28 mph (87.35 km/h) |
| 60 mph (96.56 km/h) | 59.21 mph (95.29 km/h) |
| 65 mph (104.61 km/h) | 64.15 mph (103.23 km/h) |
| 70 mph (112.65 km/h) | 69.08 mph (111.17 km/h) |
| 75 mph (120.7 km/h) | 74.01 mph (119.12 km/h) |
| 80 mph (128.75 km/h) | 78.95 mph (127.06 km/h) |
| 85 mph (136.79 km/h) | 83.88 mph (135 km/h) |
| 90 mph (144.84 km/h) | 88.82 mph (142.94 km/h) |
| 95 mph (152.89 km/h) | 93.75 mph (150.88 km/h) |
| 100 mph (160.93 km/h) | 98.69 mph (158.82 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2169 | 2520 | 2714 | 2834 | 2963 | 3055 | 3157 | 3277 | 3443 | 3609 | 3794 | 3941 | 4209 | 4504 | 4735 | 4883 | 4966 | 5270 | 5695 | 6618 |
Better Fuel Economy Factory Ratios Increased Power
