375/70r18 vs 285/55r20 Tire Size Comparison

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375/70r18 vs 285/55r20 Tire Size Comparison
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Tire Size Comparison Visualizer
Tire 1 Side View
Tire 1 Wheel
3084
18"
263
324 Revs/km
Tire 2 Side View
Tire 2 Wheel
2580
20"
157
388 Revs/km
Tire 1 Front View
375
982
Tire 2 Front View
285
822
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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 8.425.242.058.875.692.4109.2126.0
Speed Diff-1.6-4.8-8.0-11.2-14.4-17.6-20.8-24.0

Ground Clearance Decreased by 80

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See how the 375/70r18 tire size compares to the 285/55r20

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 375/70r18 and 285/55r20 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 375/70r18 and 285/55r20 tire sizes.

On top of that, given the fact that 375/70r18 is the original equipment tire size, you may also emulate the difference between your actual speed and speedometer readings after installing the 285/55r20 tires. Chances are high that you will want to calibrate your speedometer!

Other sizes often compared:

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