Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 165/82-15 | 255/85-15 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 25.65 (651.6) | 32.07 (814.5) | 6.41 (162.9) 25% |
| Width inches (mm) | 6.5 (165) | 10.04 (255) | 3.54 (90) 54.5% |
| Circum. inches (mm) | 80.59 (2047.06) | 100.74 (2558.83) | 20.15 (511.77) 25% |
| Sidewall Height inches (mm) | 5.33 (135.3) | 8.53 (216.75) | 3.21 (81.45) 60.2% |
| Revolutions per mile (km) | 786.17 (488.5) | 628.94 (390.8) | -157.23 (-97.7) -20% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 25 mph (40.23 km/h) |
| 25 mph (40.23 km/h) | 31.25 mph (50.29 km/h) |
| 30 mph (48.28 km/h) | 37.5 mph (60.35 km/h) |
| 35 mph (56.33 km/h) | 43.75 mph (70.41 km/h) |
| 40 mph (64.37 km/h) | 50 mph (80.47 km/h) |
| 45 mph (72.42 km/h) | 56.25 mph (90.53 km/h) |
| 50 mph (80.47 km/h) | 62.5 mph (100.58 km/h) |
| 55 mph (88.51 km/h) | 68.75 mph (110.64 km/h) |
| 60 mph (96.56 km/h) | 75 mph (120.7 km/h) |
| 65 mph (104.61 km/h) | 81.25 mph (130.76 km/h) |
| 70 mph (112.65 km/h) | 87.5 mph (140.82 km/h) |
| 75 mph (120.7 km/h) | 93.75 mph (150.88 km/h) |
| 80 mph (128.75 km/h) | 100 mph (160.93 km/h) |
| 85 mph (136.79 km/h) | 106.25 mph (170.99 km/h) |
| 90 mph (144.84 km/h) | 112.5 mph (181.05 km/h) |
| 95 mph (152.89 km/h) | 118.75 mph (191.11 km/h) |
| 100 mph (160.93 km/h) | 125 mph (201.17 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1601 | 1859 | 2002 | 2091 | 2186 | 2254 | 2329 | 2418 | 2540 | 2663 | 2799 | 2908 | 3106 | 3324 | 3494 | 3603 | 3664 | 3889 | 4202 | 4883 |
Better Fuel Economy Factory Ratios Increased Power
