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Same 20 in wheel · side by side

275/60R20 vs 285/60R20

First size

mm, 115–395
% of width
inches

Second size

mm, 115–395
% of width
inches

Comparing 275/60R20 · 285/60R20. Change any field and both follow.

Difference in overall diameter

+1.43%

285/60R20 is 0.47 in taller than 275/60R20 (+1.43%) and 0.39 in wider; at an indicated 60 mph you are doing 60.9 mph.

275/60R20 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 275/60R20 at 32.99 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 0.47 in.0.47 inDETAIL — ENLARGED275/60R20 · 32.99 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

275/60R20 and 285/60R20, one measurement per row; the difference is 285/60R20 minus 275/60R20
Measure­ment 275/60R20 285/60R20 Differ­ence
Overall diameter32.99 in33.46 in+0.47 in · +1.43%
Section width10.83 in11.22 in+0.39 in
Sidewall height6.50 in6.73 in+0.24 in
Circumference103.65 in105.13 in+1.48 in
Revolutions per mile611.3602.7−8.6

Other pairs with one of these two in them

Each size on its own