255/70r17 vs 275/55r20 Tire Size Comparison

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255/70r17 vs 275/55r20 Tire Size Comparison
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Tire Size Comparison Visualizer
Tire 1 Side View
Tire 1 Wheel
2477
17"
179
404 Revs/km
Tire 2 Side View
Tire 2 Wheel
2545
20"
151
393 Revs/km
Tire 1 Front View
255
789
Tire 2 Front View
275
811
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Speedometer Error
(Set Size1 to OEM Size)

Speed 10 km/h30 km/h50 km/h70 km/h90 km/h110 km/h130 km/h150 km/h
Actual 10.330.951.572.192.7113.3133.9154.5
Speed Diff0.30.91.52.12.73.33.94.5

Ground Clearance Increased by 11

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See how the 255/70r17 tire size compares to the 275/55r20

Making a decision before buying the right tire size? Or maybe you want new aftermarket tires?

The comparison charts above represent detailed calculations of the difference in size between 255/70r17 and 275/55r20 tires.

The resulting calculations of tire diameter and width, sidewall height, circumference and rim diameter are provided in the form of comparison table and visual graphics to better convey the difference between 255/70r17 and 275/55r20 tire sizes.

On top of that, given the fact that 255/70r17 is the original equipment tire size, you may also emulate the difference between your actual speed and speedometer readings after installing the 275/55r20 tires. Chances are high that you will want to calibrate your speedometer!

Other sizes often compared:

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