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Best 275/45 R20 tires

98 rated tires available in this size, scored on dry, wet, snow, comfort and wear. Top overall right now is the Michelin Pilot Sport A/S 3+ at 94/100.

29.7″
overall diameter
10.8″
section width
20″
rim diameter
678.1
revs per mile

Best 275/45 R20 all-season tires

32

20 more rated tires in this size are listed on their brand pages.

More top-rated 275/45 R20 tires

28

16 more rated tires in this size are listed on their brand pages.

Best 275/45 R20 summer tires

25

13 more rated tires in this size are listed on their brand pages.

Best 275/45 R20 winter tires

10

Best 275/45 R20 all-terrain tires

3
Conversion

275/45 R20 in inches

Overall diameter29.7″
Section width10.8″
Rim diameter20″
Sidewall height124 mm
Circumference93.4″
Revolutions per mile678.1

The closest flotation size is 33x11.50R20 — 10.9% taller and 6.2% wider. Compare them in the calculator.

Wheels

What rims fit 275/45 R20 tires?

A tire fits a range of rim widths. Too narrow or too wide and the sidewall changes shape.

Minimum
7.5″
Ideal
8.5″
Maximum
9.5″

Rim diameter is fixed at 20″ — only the width varies. Estimated from the 10.8″ section width (70–90% rule).

Fitted from the factory on rims: 20x8, 20x9, 20x9.5, 20x10, 20x10.5.

Popular comparisons

Sizes often compared with 275/45 R20

Close alternatives — each opens in the tire size calculator.

275/45R20VS255/50R20
275/45R20VS275/50R19
275/45R20VS285/40R21
Sidewall

275/45 R20 — what does it mean?

ParameterMeaning
275The first number is the section width — 275 mm, or about 10.8 inches across the widest part of the tire.
45The second number is the aspect ratio: sidewall height as a percentage of width. At 45%, the sidewall is about 124 mm tall.
R20R means radial construction, which nearly all modern tires use. The number is the rim diameter in inches — this tire fits a 20-inch wheel.