Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 305/40-23 | 280/60-20 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 32.61 (828.2) | 33.23 (844) | 0.62 (15.8) 1.9% |
| Width inches (mm) | 12.01 (305) | 11.02 (280) | -0.98 (-25) -8.2% |
| Circum. inches (mm) | 102.44 (2601.87) | 104.39 (2651.5) | 1.95 (49.64) 1.9% |
| Sidewall Height inches (mm) | 4.8 (122) | 6.61 (168) | 1.81 (46) 37.7% |
| Revolutions per mile (km) | 618.53 (384.34) | 606.96 (377.14) | -11.58 (-7.19) -1.9% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 20.38 mph (32.8 km/h) |
| 25 mph (40.23 km/h) | 25.48 mph (41 km/h) |
| 30 mph (48.28 km/h) | 30.57 mph (49.2 km/h) |
| 35 mph (56.33 km/h) | 35.67 mph (57.4 km/h) |
| 40 mph (64.37 km/h) | 40.76 mph (65.6 km/h) |
| 45 mph (72.42 km/h) | 45.86 mph (73.8 km/h) |
| 50 mph (80.47 km/h) | 50.95 mph (82 km/h) |
| 55 mph (88.51 km/h) | 56.05 mph (90.2 km/h) |
| 60 mph (96.56 km/h) | 61.14 mph (98.4 km/h) |
| 65 mph (104.61 km/h) | 66.24 mph (106.6 km/h) |
| 70 mph (112.65 km/h) | 71.34 mph (114.8 km/h) |
| 75 mph (120.7 km/h) | 76.43 mph (123 km/h) |
| 80 mph (128.75 km/h) | 81.53 mph (131.2 km/h) |
| 85 mph (136.79 km/h) | 86.62 mph (139.4 km/h) |
| 90 mph (144.84 km/h) | 91.72 mph (147.6 km/h) |
| 95 mph (152.89 km/h) | 96.81 mph (155.8 km/h) |
| 100 mph (160.93 km/h) | 101.91 mph (164 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1545 | 1794 | 1932 | 2018 | 2110 | 2176 | 2248 | 2333 | 2452 | 2570 | 2701 | 2807 | 2997 | 3207 | 3372 | 3477 | 3536 | 3753 | 4055 | 4713 |
Better Fuel Economy Factory Ratios Increased Power
