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Same 20 in wheel · side by side

275/55R20 vs 275/60R20

First size

mm, 115–395
% of width
inches

Second size

mm, 115–395
% of width
inches

Comparing 275/55R20 · 275/60R20. Change any field and both follow.

Difference in overall diameter

+3.39%

275/60R20 is 1.08 in taller than 275/55R20 (+3.39%) and the same width; at an indicated 60 mph you are doing 62.0 mph.

275/55R20 and 275/60R20 laid over each other at one scale, with the gap enlargedTwo circles drawn at one scale and sharing a center: the solid ring is 275/55R20 at 31.91 in overall, the dashed ring is 275/60R20 at 32.99 in. A detail view beside them shows the same two edges enlarged, with the gap between them dimensioned at 1.08 in.1.08 inDETAIL — ENLARGED275/55R20 · 31.91 in275/60R20 · 32.99 in
Both overall diameters at one scale, sharing a center. The detail beside them enlarges the one place they differ, and its dimension is the difference the table below states.

The difference, one row at a time

275/55R20 and 275/60R20, one measurement per row; the difference is 275/60R20 minus 275/55R20
Measure­ment 275/55R20 275/60R20 Differ­ence
Overall diameter31.91 in32.99 in+1.08 in · +3.39%
Section width10.83 in10.83 in0.00 in
Sidewall height5.95 in6.50 in+0.54 in
Circumference100.25 in103.65 in+3.40 in
Revolutions per mile632.0611.3−20.7

Other pairs with one of these two in them

Each size on its own