Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 165/82-15 | 280/50-20 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 25.65 (651.6) | 31.02 (788) | 5.37 (136.4) 20.9% |
| Width inches (mm) | 6.5 (165) | 11.02 (280) | 4.53 (115) 69.7% |
| Circum. inches (mm) | 80.59 (2047.06) | 97.46 (2475.58) | 16.87 (428.51) 20.9% |
| Sidewall Height inches (mm) | 5.33 (135.3) | 5.51 (140) | 0.19 (4.7) 3.5% |
| Revolutions per mile (km) | 786.17 (488.5) | 650.09 (403.95) | -136.08 (-84.56) -17.3% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 24.19 mph (38.92 km/h) |
| 25 mph (40.23 km/h) | 30.23 mph (48.66 km/h) |
| 30 mph (48.28 km/h) | 36.28 mph (58.39 km/h) |
| 35 mph (56.33 km/h) | 42.33 mph (68.12 km/h) |
| 40 mph (64.37 km/h) | 48.37 mph (77.85 km/h) |
| 45 mph (72.42 km/h) | 54.42 mph (87.58 km/h) |
| 50 mph (80.47 km/h) | 60.47 mph (97.31 km/h) |
| 55 mph (88.51 km/h) | 66.51 mph (107.04 km/h) |
| 60 mph (96.56 km/h) | 72.56 mph (116.77 km/h) |
| 65 mph (104.61 km/h) | 78.61 mph (126.51 km/h) |
| 70 mph (112.65 km/h) | 84.65 mph (136.24 km/h) |
| 75 mph (120.7 km/h) | 90.7 mph (145.97 km/h) |
| 80 mph (128.75 km/h) | 96.75 mph (155.7 km/h) |
| 85 mph (136.79 km/h) | 102.79 mph (165.43 km/h) |
| 90 mph (144.84 km/h) | 108.84 mph (175.16 km/h) |
| 95 mph (152.89 km/h) | 114.89 mph (184.89 km/h) |
| 100 mph (160.93 km/h) | 120.93 mph (194.62 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1654 | 1922 | 2070 | 2161 | 2260 | 2330 | 2408 | 2499 | 2626 | 2753 | 2893 | 3006 | 3210 | 3435 | 3611 | 3724 | 3787 | 4020 | 4344 | 5048 |
Better Fuel Economy Factory Ratios Increased Power
