Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 265/30-20 | 275/30-20 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 26.26 (667) | 26.5 (673) | 0.24 (6) 0.9% |
| Width inches (mm) | 10.43 (265) | 10.83 (275) | 0.39 (10) 3.8% |
| Circum. inches (mm) | 82.5 (2095.44) | 83.24 (2114.29) | 0.74 (18.85) 0.9% |
| Sidewall Height inches (mm) | 3.13 (79.5) | 3.25 (82.5) | 0.12 (3) 3.8% |
| Revolutions per mile (km) | 768.02 (477.23) | 761.17 (472.97) | -6.85 (-4.25) -0.9% |
275/30-20 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 20.18 mph (32.48 km/h) |
| 25 mph (40.23 km/h) | 25.22 mph (40.6 km/h) |
| 30 mph (48.28 km/h) | 30.27 mph (48.71 km/h) |
| 35 mph (56.33 km/h) | 35.31 mph (56.83 km/h) |
| 40 mph (64.37 km/h) | 40.36 mph (64.95 km/h) |
| 45 mph (72.42 km/h) | 45.4 mph (73.07 km/h) |
| 50 mph (80.47 km/h) | 50.45 mph (81.19 km/h) |
| 55 mph (88.51 km/h) | 55.49 mph (89.31 km/h) |
| 60 mph (96.56 km/h) | 60.54 mph (97.43 km/h) |
| 65 mph (104.61 km/h) | 65.58 mph (105.55 km/h) |
| 70 mph (112.65 km/h) | 70.63 mph (113.67 km/h) |
| 75 mph (120.7 km/h) | 75.67 mph (121.79 km/h) |
| 80 mph (128.75 km/h) | 80.72 mph (129.91 km/h) |
| 85 mph (136.79 km/h) | 85.76 mph (138.03 km/h) |
| 90 mph (144.84 km/h) | 90.81 mph (146.14 km/h) |
| 95 mph (152.89 km/h) | 95.85 mph (154.26 km/h) |
| 100 mph (160.93 km/h) | 100.9 mph (162.38 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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