Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 285/40-15 | 225/50-15 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 23.98 (609) | 23.86 (606) | -0.12 (-3) -0.5% |
| Width inches (mm) | 11.22 (285) | 8.86 (225) | -2.36 (-60) -21.1% |
| Circum. inches (mm) | 75.32 (1913.23) | 74.95 (1903.81) | -0.37 (-9.42) -0.5% |
| Sidewall Height inches (mm) | 4.49 (114) | 4.43 (112.5) | -0.06 (-1.5) -1.3% |
| Revolutions per mile (km) | 841.17 (522.68) | 845.33 (525.26) | 4.16 (2.59) 0.5% |
225/50-15 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 19.9 mph (32.03 km/h) |
| 25 mph (40.23 km/h) | 24.88 mph (40.04 km/h) |
| 30 mph (48.28 km/h) | 29.85 mph (48.04 km/h) |
| 35 mph (56.33 km/h) | 34.83 mph (56.05 km/h) |
| 40 mph (64.37 km/h) | 39.8 mph (64.06 km/h) |
| 45 mph (72.42 km/h) | 44.78 mph (72.06 km/h) |
| 50 mph (80.47 km/h) | 49.75 mph (80.07 km/h) |
| 55 mph (88.51 km/h) | 54.73 mph (88.08 km/h) |
| 60 mph (96.56 km/h) | 59.7 mph (96.09 km/h) |
| 65 mph (104.61 km/h) | 64.68 mph (104.09 km/h) |
| 70 mph (112.65 km/h) | 69.66 mph (112.1 km/h) |
| 75 mph (120.7 km/h) | 74.63 mph (120.11 km/h) |
| 80 mph (128.75 km/h) | 79.61 mph (128.11 km/h) |
| 85 mph (136.79 km/h) | 84.58 mph (136.12 km/h) |
| 90 mph (144.84 km/h) | 89.56 mph (144.13 km/h) |
| 95 mph (152.89 km/h) | 94.53 mph (152.13 km/h) |
| 100 mph (160.93 km/h) | 99.51 mph (160.14 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2151 | 2499 | 2691 | 2810 | 2938 | 3030 | 3131 | 3250 | 3414 | 3579 | 3762 | 3909 | 4174 | 4467 | 4696 | 4842 | 4925 | 5227 | 5648 | 6563 |
Better Fuel Economy Factory Ratios Increased Power
