Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 295/25-21 | 275/30-20 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 26.81 (680.9) | 26.5 (673) | -0.31 (-7.9) -1.2% |
| Width inches (mm) | 11.61 (295) | 10.83 (275) | -0.79 (-20) -6.8% |
| Circum. inches (mm) | 84.22 (2139.11) | 83.24 (2114.29) | -0.98 (-24.82) -1.2% |
| Sidewall Height inches (mm) | 2.9 (73.75) | 3.25 (82.5) | 0.34 (8.75) 11.9% |
| Revolutions per mile (km) | 752.34 (467.48) | 761.17 (472.97) | 8.83 (5.49) 1.2% |
275/30-20 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 19.77 mph (31.81 km/h) |
| 25 mph (40.23 km/h) | 24.71 mph (39.77 km/h) |
| 30 mph (48.28 km/h) | 29.65 mph (47.72 km/h) |
| 35 mph (56.33 km/h) | 34.59 mph (55.67 km/h) |
| 40 mph (64.37 km/h) | 39.54 mph (63.63 km/h) |
| 45 mph (72.42 km/h) | 44.48 mph (71.58 km/h) |
| 50 mph (80.47 km/h) | 49.42 mph (79.53 km/h) |
| 55 mph (88.51 km/h) | 54.36 mph (87.49 km/h) |
| 60 mph (96.56 km/h) | 59.3 mph (95.44 km/h) |
| 65 mph (104.61 km/h) | 64.25 mph (103.39 km/h) |
| 70 mph (112.65 km/h) | 69.19 mph (111.35 km/h) |
| 75 mph (120.7 km/h) | 74.13 mph (119.3 km/h) |
| 80 mph (128.75 km/h) | 79.07 mph (127.25 km/h) |
| 85 mph (136.79 km/h) | 84.01 mph (135.21 km/h) |
| 90 mph (144.84 km/h) | 88.96 mph (143.16 km/h) |
| 95 mph (152.89 km/h) | 93.9 mph (151.11 km/h) |
| 100 mph (160.93 km/h) | 98.84 mph (159.07 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1937 | 2250 | 2423 | 2531 | 2646 | 2728 | 2819 | 2926 | 3075 | 3223 | 3388 | 3520 | 3759 | 4022 | 4229 | 4360 | 4435 | 4707 | 5086 | 5910 |
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