Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 305/50-20 | 275/60-20 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 32.01 (813) | 32.99 (838) | 0.98 (25) 3.1% |
| Width inches (mm) | 12.01 (305) | 10.83 (275) | -1.18 (-30) -9.8% |
| Circum. inches (mm) | 100.56 (2554.11) | 103.65 (2632.65) | 3.09 (78.54) 3.1% |
| Sidewall Height inches (mm) | 6 (152.5) | 6.5 (165) | 0.49 (12.5) 8.2% |
| Revolutions per mile (km) | 630.1 (391.52) | 611.3 (379.84) | -18.8 (-11.68) -3% |
275/60-20 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 20.62 mph (33.18 km/h) |
| 25 mph (40.23 km/h) | 25.77 mph (41.47 km/h) |
| 30 mph (48.28 km/h) | 30.92 mph (49.77 km/h) |
| 35 mph (56.33 km/h) | 36.08 mph (58.06 km/h) |
| 40 mph (64.37 km/h) | 41.23 mph (66.35 km/h) |
| 45 mph (72.42 km/h) | 46.38 mph (74.65 km/h) |
| 50 mph (80.47 km/h) | 51.54 mph (82.94 km/h) |
| 55 mph (88.51 km/h) | 56.69 mph (91.24 km/h) |
| 60 mph (96.56 km/h) | 61.85 mph (99.53 km/h) |
| 65 mph (104.61 km/h) | 67 mph (107.82 km/h) |
| 70 mph (112.65 km/h) | 72.15 mph (116.12 km/h) |
| 75 mph (120.7 km/h) | 77.31 mph (124.41 km/h) |
| 80 mph (128.75 km/h) | 82.46 mph (132.71 km/h) |
| 85 mph (136.79 km/h) | 87.61 mph (141 km/h) |
| 90 mph (144.84 km/h) | 92.77 mph (149.3 km/h) |
| 95 mph (152.89 km/h) | 97.92 mph (157.59 km/h) |
| 100 mph (160.93 km/h) | 103.08 mph (165.88 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1556 | 1807 | 1946 | 2032 | 2125 | 2191 | 2264 | 2350 | 2469 | 2588 | 2721 | 2827 | 3019 | 3230 | 3396 | 3502 | 3561 | 3780 | 4084 | 4746 |
Better Fuel Economy Factory Ratios Increased Power
