Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 265/60-20 | 275/55-21 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 32.52 (826) | 32.91 (835.9) | 0.39 (9.9) 1.2% |
| Width inches (mm) | 10.43 (265) | 10.83 (275) | 0.39 (10) 3.8% |
| Circum. inches (mm) | 102.16 (2594.96) | 103.39 (2626.06) | 1.22 (31.1) 1.2% |
| Sidewall Height inches (mm) | 6.26 (159) | 5.95 (151.25) | -0.31 (-7.75) -4.9% |
| Revolutions per mile (km) | 620.18 (385.36) | 612.84 (380.8) | -7.35 (-4.56) -1.2% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 20.24 mph (32.57 km/h) |
| 25 mph (40.23 km/h) | 25.3 mph (40.72 km/h) |
| 30 mph (48.28 km/h) | 30.36 mph (48.86 km/h) |
| 35 mph (56.33 km/h) | 35.42 mph (57 km/h) |
| 40 mph (64.37 km/h) | 40.48 mph (65.15 km/h) |
| 45 mph (72.42 km/h) | 45.54 mph (73.29 km/h) |
| 50 mph (80.47 km/h) | 50.6 mph (81.43 km/h) |
| 55 mph (88.51 km/h) | 55.66 mph (89.57 km/h) |
| 60 mph (96.56 km/h) | 60.72 mph (97.72 km/h) |
| 65 mph (104.61 km/h) | 65.78 mph (105.86 km/h) |
| 70 mph (112.65 km/h) | 70.84 mph (114 km/h) |
| 75 mph (120.7 km/h) | 75.9 mph (122.15 km/h) |
| 80 mph (128.75 km/h) | 80.96 mph (130.29 km/h) |
| 85 mph (136.79 km/h) | 86.02 mph (138.43 km/h) |
| 90 mph (144.84 km/h) | 91.08 mph (146.58 km/h) |
| 95 mph (152.89 km/h) | 96.14 mph (154.72 km/h) |
| 100 mph (160.93 km/h) | 101.2 mph (162.86 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1560 | 1812 | 1951 | 2037 | 2130 | 2197 | 2270 | 2356 | 2475 | 2595 | 2728 | 2834 | 3026 | 3239 | 3404 | 3511 | 3570 | 3789 | 4095 | 4758 |
Better Fuel Economy Factory Ratios Increased Power
