Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 165/82-15 | 205/20-21 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 25.65 (651.6) | 24.23 (615.4) | -1.43 (-36.2) -5.6% |
| Width inches (mm) | 6.5 (165) | 8.07 (205) | 1.57 (40) 24.2% |
| Circum. inches (mm) | 80.59 (2047.06) | 76.12 (1933.34) | -4.48 (-113.73) -5.6% |
| Sidewall Height inches (mm) | 5.33 (135.3) | 1.61 (41) | -3.71 (-94.3) -69.7% |
| Revolutions per mile (km) | 786.17 (488.5) | 832.42 (517.24) | 46.25 (28.74) 5.9% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 18.89 mph (30.4 km/h) |
| 25 mph (40.23 km/h) | 23.61 mph (38 km/h) |
| 30 mph (48.28 km/h) | 28.33 mph (45.6 km/h) |
| 35 mph (56.33 km/h) | 33.06 mph (53.2 km/h) |
| 40 mph (64.37 km/h) | 37.78 mph (60.8 km/h) |
| 45 mph (72.42 km/h) | 42.5 mph (68.4 km/h) |
| 50 mph (80.47 km/h) | 47.22 mph (76 km/h) |
| 55 mph (88.51 km/h) | 51.94 mph (83.6 km/h) |
| 60 mph (96.56 km/h) | 56.67 mph (91.2 km/h) |
| 65 mph (104.61 km/h) | 61.39 mph (98.8 km/h) |
| 70 mph (112.65 km/h) | 66.11 mph (106.4 km/h) |
| 75 mph (120.7 km/h) | 70.83 mph (114 km/h) |
| 80 mph (128.75 km/h) | 75.56 mph (121.6 km/h) |
| 85 mph (136.79 km/h) | 80.28 mph (129.19 km/h) |
| 90 mph (144.84 km/h) | 85 mph (136.79 km/h) |
| 95 mph (152.89 km/h) | 89.72 mph (144.39 km/h) |
| 100 mph (160.93 km/h) | 94.44 mph (151.99 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2118 | 2461 | 2650 | 2767 | 2894 | 2984 | 3083 | 3200 | 3362 | 3525 | 3705 | 3849 | 4110 | 4399 | 4624 | 4769 | 4850 | 5147 | 5562 | 6463 |
Better Fuel Economy Factory Ratios Increased Power
