Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 275/50-15 | 285/45-15 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 25.83 (656) | 25.1 (637.5) | -0.73 (-18.5) -2.8% |
| Width inches (mm) | 10.83 (275) | 11.22 (285) | 0.39 (10) 3.6% |
| Circum. inches (mm) | 81.14 (2060.88) | 78.85 (2002.77) | -2.29 (-58.12) -2.8% |
| Sidewall Height inches (mm) | 5.41 (137.5) | 5.05 (128.25) | -0.36 (-9.25) -6.7% |
| Revolutions per mile (km) | 780.9 (485.23) | 803.56 (499.31) | 22.66 (14.08) 2.9% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 19.44 mph (31.28 km/h) |
| 25 mph (40.23 km/h) | 24.29 mph (39.1 km/h) |
| 30 mph (48.28 km/h) | 29.15 mph (46.92 km/h) |
| 35 mph (56.33 km/h) | 34.01 mph (54.74 km/h) |
| 40 mph (64.37 km/h) | 38.87 mph (62.56 km/h) |
| 45 mph (72.42 km/h) | 43.73 mph (70.38 km/h) |
| 50 mph (80.47 km/h) | 48.59 mph (78.2 km/h) |
| 55 mph (88.51 km/h) | 53.45 mph (86.02 km/h) |
| 60 mph (96.56 km/h) | 58.31 mph (93.84 km/h) |
| 65 mph (104.61 km/h) | 63.17 mph (101.66 km/h) |
| 70 mph (112.65 km/h) | 68.03 mph (109.48 km/h) |
| 75 mph (120.7 km/h) | 72.88 mph (117.3 km/h) |
| 80 mph (128.75 km/h) | 77.74 mph (125.12 km/h) |
| 85 mph (136.79 km/h) | 82.6 mph (132.94 km/h) |
| 90 mph (144.84 km/h) | 87.46 mph (140.76 km/h) |
| 95 mph (152.89 km/h) | 92.32 mph (148.58 km/h) |
| 100 mph (160.93 km/h) | 97.18 mph (156.4 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2045 | 2376 | 2558 | 2671 | 2793 | 2880 | 2976 | 3089 | 3246 | 3402 | 3576 | 3716 | 3968 | 4246 | 4464 | 4603 | 4682 | 4969 | 5369 | 6239 |
Better Fuel Economy Factory Ratios Increased Power
