Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 265/30-21 | 205/55-11 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 27.26 (692.4) | 19.88 (504.9) | -7.38 (-187.5) -27.1% |
| Width inches (mm) | 10.43 (265) | 8.07 (205) | -2.36 (-60) -22.6% |
| Circum. inches (mm) | 85.64 (2175.24) | 62.45 (1586.19) | -23.19 (-589.05) -27.1% |
| Sidewall Height inches (mm) | 3.13 (79.5) | 4.44 (112.75) | 1.31 (33.25) 41.8% |
| Revolutions per mile (km) | 739.85 (459.72) | 1014.6 (630.44) | 274.75 (170.72) 37.1% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 14.58 mph (23.47 km/h) |
| 25 mph (40.23 km/h) | 18.23 mph (29.34 km/h) |
| 30 mph (48.28 km/h) | 21.88 mph (35.21 km/h) |
| 35 mph (56.33 km/h) | 25.52 mph (41.07 km/h) |
| 40 mph (64.37 km/h) | 29.17 mph (46.94 km/h) |
| 45 mph (72.42 km/h) | 32.81 mph (52.81 km/h) |
| 50 mph (80.47 km/h) | 36.46 mph (58.68 km/h) |
| 55 mph (88.51 km/h) | 40.11 mph (64.54 km/h) |
| 60 mph (96.56 km/h) | 43.75 mph (70.41 km/h) |
| 65 mph (104.61 km/h) | 47.4 mph (76.28 km/h) |
| 70 mph (112.65 km/h) | 51.04 mph (82.15 km/h) |
| 75 mph (120.7 km/h) | 54.69 mph (88.02 km/h) |
| 80 mph (128.75 km/h) | 58.34 mph (93.88 km/h) |
| 85 mph (136.79 km/h) | 61.98 mph (99.75 km/h) |
| 90 mph (144.84 km/h) | 65.63 mph (105.62 km/h) |
| 95 mph (152.89 km/h) | 69.27 mph (111.49 km/h) |
| 100 mph (160.93 km/h) | 72.92 mph (117.35 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
Better Fuel Economy Factory Ratios Increased Power
