Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 275/40-19 | 275/40-20 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 27.66 (702.6) | 28.66 (728) | 1 (25.4) 3.6% |
| Width inches (mm) | 10.83 (275) | 10.83 (275) | 0 (0) 0% |
| Circum. inches (mm) | 86.9 (2207.28) | 90.04 (2287.08) | 3.14 (79.8) 3.6% |
| Sidewall Height inches (mm) | 4.33 (110) | 4.33 (110) | 0 (0) 0% |
| Revolutions per mile (km) | 729.11 (453.04) | 703.67 (437.24) | -25.44 (-15.81) -3.5% |
275/40-20 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 20.72 mph (33.35 km/h) |
| 25 mph (40.23 km/h) | 25.9 mph (41.69 km/h) |
| 30 mph (48.28 km/h) | 31.08 mph (50.03 km/h) |
| 35 mph (56.33 km/h) | 36.27 mph (58.36 km/h) |
| 40 mph (64.37 km/h) | 41.45 mph (66.7 km/h) |
| 45 mph (72.42 km/h) | 46.63 mph (75.04 km/h) |
| 50 mph (80.47 km/h) | 51.81 mph (83.38 km/h) |
| 55 mph (88.51 km/h) | 56.99 mph (91.71 km/h) |
| 60 mph (96.56 km/h) | 62.17 mph (100.05 km/h) |
| 65 mph (104.61 km/h) | 67.35 mph (108.39 km/h) |
| 70 mph (112.65 km/h) | 72.53 mph (116.73 km/h) |
| 75 mph (120.7 km/h) | 77.71 mph (125.06 km/h) |
| 80 mph (128.75 km/h) | 82.89 mph (133.4 km/h) |
| 85 mph (136.79 km/h) | 88.07 mph (141.74 km/h) |
| 90 mph (144.84 km/h) | 93.25 mph (150.08 km/h) |
| 95 mph (152.89 km/h) | 98.43 mph (158.42 km/h) |
| 100 mph (160.93 km/h) | 103.62 mph (166.75 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1791 | 2080 | 2240 | 2339 | 2446 | 2522 | 2606 | 2705 | 2842 | 2979 | 3132 | 3254 | 3475 | 3719 | 3909 | 4031 | 4100 | 4351 | 4702 | 5464 |
Better Fuel Economy Factory Ratios Increased Power
