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Same 20 in wheel · side by side

285/55R20 vs 285/60R20

First size

mm, 115–395
% of width
inches

Second size

mm, 115–395
% of width
inches

Comparing 285/55R20 · 285/60R20. Change any field and both follow.

Difference in overall diameter

+3.47%

285/60R20 is 1.12 in taller than 285/55R20 (+3.47%) and the same width; at an indicated 60 mph you are doing 62.1 mph.

285/55R20 and 285/60R20 laid over each other at one scale, with the gap enlargedTwo circles drawn at one scale and sharing a center: the solid ring is 285/55R20 at 32.34 in overall, the dashed ring is 285/60R20 at 33.46 in. A detail view beside them shows the same two edges enlarged, with the gap between them dimensioned at 1.12 in.1.12 inDETAIL — ENLARGED285/55R20 · 32.34 in285/60R20 · 33.46 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

285/55R20 and 285/60R20, one measurement per row; the difference is 285/60R20 minus 285/55R20
Measure­ment 285/55R20 285/60R20 Differ­ence
Overall diameter32.34 in33.46 in+1.12 in · +3.47%
Section width11.22 in11.22 in0.00 in
Sidewall height6.17 in6.73 in+0.56 in
Circumference101.61 in105.13 in+3.53 in
Revolutions per mile623.6602.7−20.9

Other pairs with one of these two in them

Each size on its own