Tire size comparison in inches
305/50 R20 vs 305/50 R18

Original tire size
/
R
/
R
New tire size
CM INCHES

Parameter Old New Difference
Overall diameter: - - -
Section width - - -
Circumference - - -
Sidewall height - - -
Revs per mile: - - -
Clearance -
Result: -
If your speedometer reads:
Real speed is:
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Size difference between 305/50 R20 and 305/50 R18 tires.

In the tire comparison table above, you can see a detailed calculation of the size difference between 305/50 R20 and 305/50 R18 tire. The calculation results are presented in the form of visual infographics, on which tire with size 305/50 R20 is on top, and tire with size 305/50 R18 below. Both in the table and in the graph, the tires are compared according to the following indicators: overall diameter, section width, circumference, sidewall height and clearance. Also, the online application calculates the difference in real speed and speedometer readings if the difference between tire 305/50 R20 and tire 305/50 R18 is significant. Calculate the difference in inches.

If you want to compare other tire sizes, then select their sizes in the drop-down fields and click on the green button. The online wheel calculator will then display the new results.

Infographics

Side comparison Frontal comparison
305/50 R20 vs 305/50 R18 side comparison of car tires in inches 305/50 R20 vs 305/50 R18 frontal comparison of car tires in inches

See also:

275/55 R20
285/60 R18
285/55 R20
275/60 R20
275/65 R18
205/50 R15
285/50 R20
265/70 R17
235/75 R15
275/60 R15
265/65 R17
205/50 R18
275/50 R18