Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 275/25-20 | 275/40-20 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 25.41 (645.5) | 28.66 (728) | 3.25 (82.5) 12.8% |
| Width inches (mm) | 10.83 (275) | 10.83 (275) | 0 (0) 0% |
| Circum. inches (mm) | 79.84 (2027.9) | 90.04 (2287.08) | 10.2 (259.18) 12.8% |
| Sidewall Height inches (mm) | 2.71 (68.75) | 4.33 (110) | 1.62 (41.25) 60% |
| Revolutions per mile (km) | 793.6 (493.12) | 703.67 (437.24) | -89.93 (-55.88) -11.3% |
275/40-20 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 22.56 mph (36.3 km/h) |
| 25 mph (40.23 km/h) | 28.2 mph (45.38 km/h) |
| 30 mph (48.28 km/h) | 33.83 mph (54.45 km/h) |
| 35 mph (56.33 km/h) | 39.47 mph (63.53 km/h) |
| 40 mph (64.37 km/h) | 45.11 mph (72.6 km/h) |
| 45 mph (72.42 km/h) | 50.75 mph (81.68 km/h) |
| 50 mph (80.47 km/h) | 56.39 mph (90.75 km/h) |
| 55 mph (88.51 km/h) | 62.03 mph (99.83 km/h) |
| 60 mph (96.56 km/h) | 67.67 mph (108.9 km/h) |
| 65 mph (104.61 km/h) | 73.31 mph (117.98 km/h) |
| 70 mph (112.65 km/h) | 78.95 mph (127.05 km/h) |
| 75 mph (120.7 km/h) | 84.59 mph (136.13 km/h) |
| 80 mph (128.75 km/h) | 90.22 mph (145.2 km/h) |
| 85 mph (136.79 km/h) | 95.86 mph (154.28 km/h) |
| 90 mph (144.84 km/h) | 101.5 mph (163.35 km/h) |
| 95 mph (152.89 km/h) | 107.14 mph (172.43 km/h) |
| 100 mph (160.93 km/h) | 112.78 mph (181.5 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
