Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 295/40-21 | 275/50-20 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 30.29 (769.4) | 30.83 (783) | 0.54 (13.6) 1.8% |
| Width inches (mm) | 11.61 (295) | 10.83 (275) | -0.79 (-20) -6.8% |
| Circum. inches (mm) | 95.16 (2417.14) | 96.85 (2459.87) | 1.68 (42.73) 1.8% |
| Sidewall Height inches (mm) | 4.65 (118) | 5.41 (137.5) | 0.77 (19.5) 16.5% |
| Revolutions per mile (km) | 665.8 (413.71) | 654.24 (406.53) | -11.56 (-7.19) -1.7% |
275/50-20 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 20.35 mph (32.76 km/h) |
| 25 mph (40.23 km/h) | 25.44 mph (40.94 km/h) |
| 30 mph (48.28 km/h) | 30.53 mph (49.13 km/h) |
| 35 mph (56.33 km/h) | 35.62 mph (57.32 km/h) |
| 40 mph (64.37 km/h) | 40.71 mph (65.51 km/h) |
| 45 mph (72.42 km/h) | 45.8 mph (73.7 km/h) |
| 50 mph (80.47 km/h) | 50.88 mph (81.89 km/h) |
| 55 mph (88.51 km/h) | 55.97 mph (90.08 km/h) |
| 60 mph (96.56 km/h) | 61.06 mph (98.27 km/h) |
| 65 mph (104.61 km/h) | 66.15 mph (106.46 km/h) |
| 70 mph (112.65 km/h) | 71.24 mph (114.65 km/h) |
| 75 mph (120.7 km/h) | 76.33 mph (122.83 km/h) |
| 80 mph (128.75 km/h) | 81.41 mph (131.02 km/h) |
| 85 mph (136.79 km/h) | 86.5 mph (139.21 km/h) |
| 90 mph (144.84 km/h) | 91.59 mph (147.4 km/h) |
| 95 mph (152.89 km/h) | 96.68 mph (155.59 km/h) |
| 100 mph (160.93 km/h) | 101.77 mph (163.78 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1665 | 1934 | 2083 | 2175 | 2274 | 2345 | 2423 | 2515 | 2643 | 2770 | 2912 | 3025 | 3231 | 3457 | 3634 | 3748 | 3812 | 4045 | 4371 | 5080 |
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