255/70r17 vs 275/55r20 Tire Comparison Table
Tire Size Comparison Visualizer
2477
17"
179
404 Revs/km
2545
20"
151
393 Revs/km
255
789
275
811
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Speedometer Error
(Set Size1 to OEM Size)
(Set Size1 to OEM Size)
| Speed | 10 km/h | 30 km/h | 50 km/h | 70 km/h | 90 km/h | 110 km/h | 130 km/h | 150 km/h |
|---|---|---|---|---|---|---|---|---|
| Actual | 10.3 | 30.9 | 51.5 | 72.1 | 92.7 | 113.3 | 133.9 | 154.5 |
| Speed Diff | 0.3 | 0.9 | 1.5 | 2.1 | 2.7 | 3.3 | 3.9 | 4.5 |
Ground Clearance Increased by 11
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Check out how the 255/70r17 differs in size from the 275/55r20
Would you like to upsize your tires?
The visuals and tables above illustrate the difference in dimensions between 255/70r17 and 275/55r20 tires.
By looking at a visual representation of the differences in tire diameter, width, sidewall height, circumference, revs per mile, and speed difference, it easy to compare the 255/70r17 and 275/55r20 tire sizes.
Besides, considering that 255/70r17 is the factory size, your vehicle’s speedometer shows the correct speed. Check out the chart with the possible speed difference should you decide to go with the 275/55r20 tires. It is strongly recommended to calibrate speedometer every time you upsize or downsize your tires.