Best 37x13.50R20 tires

18 rated tires available in this size, scored on dry, wet, snow, comfort and wear.

Top pick in 37x13.50R20

Falken WildPeak M/T

665 owner reviews

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Compare two 37x13.50R20 tires side by side

Every rated 37x13.50R20 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.

Best 37x13.50R20 all-terrain tires

9
  1. Nitto Ridge Grappler

    213 owner reviews

    89 Check price on Amazon · 37x13.50R20
  2. Toyo Open Country R/T

    98 owner reviews

    90 Check price on Amazon · 37x13.50R20
  3. Cooper Discoverer STT PRO

    356 owner reviews

    88 Check price on Amazon · 37x13.50R20
  4. 90 Check price on Amazon · 37x13.50R20
  5. Nitto Recon Grappler A/T

    32 owner reviews

    93 Check price on Amazon · 37x13.50R20

Best 37x13.50R20 mud-terrain tires

9
  1. Falken WildPeak M/T

    665 owner reviews

    93 Check price on Amazon · 37x13.50R20
  2. Toyo Open Country M/T

    187 owner reviews

    90 Check price on Amazon · 37x13.50R20
  3. 90 Check price on Amazon · 37x13.50R20
  4. Atturo Trail Blade M/T

    175 owner reviews

    86 Check price on Amazon · 37x13.50R20
  5. 88 Check price on Amazon · 37x13.50R20

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37x13.50R20 in inches

Overall diameter37″
Section width13.5″
Rim diameter20″
Sidewall height216 mm
Circumference116.2″
Revolutions per mile545.1

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

What rims fit 37x13.50R20 tires?

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

Minimum
9.5″
Ideal
11″
Maximum
12″

The rim diameter is fixed at 20″; only the width can change. Rims are usually 70–90% as wide as the tire’s 13.5″ section width.

Some factory fitments sit outside that range: 20x9. Check the rim width approved for your car before you buy.

Cars that use 37x13.50R20

Fitted from the factory on at least one trim. Models with the most trims and years in this size come first.