Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 255/45-15 | 285/50-15 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 24.04 (610.5) | 26.22 (666) | 2.19 (55.5) 9.1% |
| Width inches (mm) | 10.04 (255) | 11.22 (285) | 1.18 (30) 11.8% |
| Circum. inches (mm) | 75.51 (1917.94) | 82.37 (2092.3) | 6.86 (174.36) 9.1% |
| Sidewall Height inches (mm) | 4.52 (114.75) | 5.61 (142.5) | 1.09 (27.75) 24.2% |
| Revolutions per mile (km) | 839.1 (521.39) | 769.17 (477.94) | -69.92 (-43.45) -8.3% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 21.82 mph (35.11 km/h) |
| 25 mph (40.23 km/h) | 27.27 mph (43.89 km/h) |
| 30 mph (48.28 km/h) | 32.73 mph (52.67 km/h) |
| 35 mph (56.33 km/h) | 38.18 mph (61.45 km/h) |
| 40 mph (64.37 km/h) | 43.64 mph (70.23 km/h) |
| 45 mph (72.42 km/h) | 49.09 mph (79 km/h) |
| 50 mph (80.47 km/h) | 54.55 mph (87.78 km/h) |
| 55 mph (88.51 km/h) | 60 mph (96.56 km/h) |
| 60 mph (96.56 km/h) | 65.45 mph (105.34 km/h) |
| 65 mph (104.61 km/h) | 70.91 mph (114.12 km/h) |
| 70 mph (112.65 km/h) | 76.36 mph (122.9 km/h) |
| 75 mph (120.7 km/h) | 81.82 mph (131.67 km/h) |
| 80 mph (128.75 km/h) | 87.27 mph (140.45 km/h) |
| 85 mph (136.79 km/h) | 92.73 mph (149.23 km/h) |
| 90 mph (144.84 km/h) | 98.18 mph (158.01 km/h) |
| 95 mph (152.89 km/h) | 103.64 mph (166.79 km/h) |
| 100 mph (160.93 km/h) | 109.09 mph (175.57 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1957 | 2274 | 2449 | 2557 | 2674 | 2757 | 2849 | 2957 | 3107 | 3257 | 3423 | 3557 | 3798 | 4065 | 4273 | 4406 | 4481 | 4756 | 5139 | 5972 |
Better Fuel Economy Factory Ratios Increased Power
