Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 285/40-15 | 265/50-15 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 23.98 (609) | 25.43 (646) | 1.46 (37) 6.1% |
| Width inches (mm) | 11.22 (285) | 10.43 (265) | -0.79 (-20) -7% |
| Circum. inches (mm) | 75.32 (1913.23) | 79.9 (2029.47) | 4.58 (116.24) 6.1% |
| Sidewall Height inches (mm) | 4.49 (114) | 5.22 (132.5) | 0.73 (18.5) 16.2% |
| Revolutions per mile (km) | 841.17 (522.68) | 792.99 (492.74) | -48.18 (-29.94) -5.7% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 21.22 mph (34.14 km/h) |
| 25 mph (40.23 km/h) | 26.52 mph (42.68 km/h) |
| 30 mph (48.28 km/h) | 31.82 mph (51.21 km/h) |
| 35 mph (56.33 km/h) | 37.13 mph (59.75 km/h) |
| 40 mph (64.37 km/h) | 42.43 mph (68.28 km/h) |
| 45 mph (72.42 km/h) | 47.73 mph (76.82 km/h) |
| 50 mph (80.47 km/h) | 53.04 mph (85.36 km/h) |
| 55 mph (88.51 km/h) | 58.34 mph (93.89 km/h) |
| 60 mph (96.56 km/h) | 63.65 mph (102.43 km/h) |
| 65 mph (104.61 km/h) | 68.95 mph (110.96 km/h) |
| 70 mph (112.65 km/h) | 74.25 mph (119.5 km/h) |
| 75 mph (120.7 km/h) | 79.56 mph (128.03 km/h) |
| 80 mph (128.75 km/h) | 84.86 mph (136.57 km/h) |
| 85 mph (136.79 km/h) | 90.16 mph (145.11 km/h) |
| 90 mph (144.84 km/h) | 95.47 mph (153.64 km/h) |
| 95 mph (152.89 km/h) | 100.77 mph (162.18 km/h) |
| 100 mph (160.93 km/h) | 106.08 mph (170.71 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2018 | 2344 | 2525 | 2636 | 2757 | 2842 | 2937 | 3048 | 3203 | 3358 | 3529 | 3667 | 3916 | 4191 | 4405 | 4543 | 4620 | 4903 | 5298 | 6157 |
Better Fuel Economy Factory Ratios Increased Power
