Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 275/45-16 | 270/40-20 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 25.74 (653.9) | 28.5 (724) | 2.76 (70.1) 10.7% |
| Width inches (mm) | 10.83 (275) | 10.63 (270) | -0.2 (-5) -1.8% |
| Circum. inches (mm) | 80.88 (2054.29) | 89.55 (2274.51) | 8.67 (220.23) 10.7% |
| Sidewall Height inches (mm) | 4.87 (123.75) | 4.25 (108) | -0.62 (-15.75) -12.7% |
| Revolutions per mile (km) | 783.41 (486.79) | 707.56 (439.65) | -75.85 (-47.13) -9.7% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 22.14 mph (35.64 km/h) |
| 25 mph (40.23 km/h) | 27.68 mph (44.55 km/h) |
| 30 mph (48.28 km/h) | 33.22 mph (53.46 km/h) |
| 35 mph (56.33 km/h) | 38.75 mph (62.37 km/h) |
| 40 mph (64.37 km/h) | 44.29 mph (71.27 km/h) |
| 45 mph (72.42 km/h) | 49.82 mph (80.18 km/h) |
| 50 mph (80.47 km/h) | 55.36 mph (89.09 km/h) |
| 55 mph (88.51 km/h) | 60.9 mph (98 km/h) |
| 60 mph (96.56 km/h) | 66.43 mph (106.91 km/h) |
| 65 mph (104.61 km/h) | 71.97 mph (115.82 km/h) |
| 70 mph (112.65 km/h) | 77.5 mph (124.73 km/h) |
| 75 mph (120.7 km/h) | 83.04 mph (133.64 km/h) |
| 80 mph (128.75 km/h) | 88.58 mph (142.55 km/h) |
| 85 mph (136.79 km/h) | 94.11 mph (151.46 km/h) |
| 90 mph (144.84 km/h) | 99.65 mph (160.37 km/h) |
| 95 mph (152.89 km/h) | 105.18 mph (169.28 km/h) |
| 100 mph (160.93 km/h) | 110.72 mph (178.19 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1801 | 2092 | 2253 | 2352 | 2460 | 2536 | 2620 | 2720 | 2858 | 2996 | 3149 | 3272 | 3494 | 3739 | 3931 | 4053 | 4122 | 4375 | 4728 | 5494 |
Better Fuel Economy Factory Ratios Increased Power
