Best 375/45R20 tires

1 rated tire available in this size, scored on dry, wet, snow, comfort and wear.

Top pick in 375/45R20

8 owner reviews

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Every rated 375/45R20 tire, by season

Ranked by our Relative score, weighed against how many reviews and tests stand behind it.

How scores work

Relative score: 0–100. Blends road tests (60%) and owner reviews (40%) category by category, the same way on every TireWheelGuide page. With only one of the two, it uses that one.
Ranking: A score backed by only a few reviews or tests is pulled toward the typical score before ranking, so a 95 from a dozen reviews can rank below a 92 from hundreds.

Rank by

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Within 3% of the overall diameter, on the same rim first. Check the sizes approved for your vehicle before you switch.

Revolutions per mile: how many times the tire turns in one mile, the count your speedometer is calibrated to.

The closest flotation size is 33x13.50R20 — 0.9% shorter and 8.6% narrower. Compare them in the calculator.

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

Minimum

10.5″

Ideal

12″

Maximum

13.5″

The rim diameter is fixed at 20″; only the width can change. Rims are usually 70–90% as wide as the tire’s 14.8″ section width.

Close alternatives — each opens in the tire size calculator.

Parameter	Meaning
375	The first number is the section width — 375 mm, or about 14.8 inches across the widest part of the tire.
45	The second number is the aspect ratio: sidewall height as a percentage of width. At 45%, the sidewall is about 169 mm tall.
R20	R means radial construction, which nearly all modern tires use. The number is the rim diameter in inches — this tire fits a 20-inch wheel.