Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 225/40-20 | 275/40-20 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 27.09 (688) | 28.66 (728) | 1.57 (40) 5.8% |
| Width inches (mm) | 8.86 (225) | 10.83 (275) | 1.97 (50) 22.2% |
| Circum. inches (mm) | 85.1 (2161.42) | 90.04 (2287.08) | 4.95 (125.66) 5.8% |
| Sidewall Height inches (mm) | 3.54 (90) | 4.33 (110) | 0.79 (20) 22.2% |
| Revolutions per mile (km) | 744.58 (462.66) | 703.67 (437.24) | -40.91 (-25.42) -5.5% |
275/40-20 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 21.16 mph (34.06 km/h) |
| 25 mph (40.23 km/h) | 26.45 mph (42.57 km/h) |
| 30 mph (48.28 km/h) | 31.74 mph (51.09 km/h) |
| 35 mph (56.33 km/h) | 37.03 mph (59.6 km/h) |
| 40 mph (64.37 km/h) | 42.33 mph (68.12 km/h) |
| 45 mph (72.42 km/h) | 47.62 mph (76.63 km/h) |
| 50 mph (80.47 km/h) | 52.91 mph (85.15 km/h) |
| 55 mph (88.51 km/h) | 58.2 mph (93.66 km/h) |
| 60 mph (96.56 km/h) | 63.49 mph (102.17 km/h) |
| 65 mph (104.61 km/h) | 68.78 mph (110.69 km/h) |
| 70 mph (112.65 km/h) | 74.07 mph (119.2 km/h) |
| 75 mph (120.7 km/h) | 79.36 mph (127.72 km/h) |
| 80 mph (128.75 km/h) | 84.65 mph (136.23 km/h) |
| 85 mph (136.79 km/h) | 89.94 mph (144.75 km/h) |
| 90 mph (144.84 km/h) | 95.23 mph (153.26 km/h) |
| 95 mph (152.89 km/h) | 100.52 mph (161.78 km/h) |
| 100 mph (160.93 km/h) | 105.81 mph (170.29 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
